So this weekend I put the driver in play for the first time in a while. In no small part because of this thread. So I thought this would be some good perspective.
My last round I shot 95 hitting only 3H off the tee, right down the middle every time. One major blowup hole where I carded a 10 on a par 5. Otherwise 5 doubles, 8 bogeys, 4 pars. Never managed to get up and down for par. 3 putt bogeyed twice(once from like 80 ft.). My most consistent round ever, and left me feeling like what I saw was repeatable, and I should expect to break 100 every time out.

I have slowly been working the driver back into my practice sessions over the last 3 weeks, and finally got to a point where I felt confident there would be no 50 yard slices. On the launch monitor I was carrying 230 minimum on mediocre strikes. 250+ on good strikes. 230 yards is a good 3w for me, so I figured this would be a good strategy test.
As you might expect my scorecard was way more erratic. Ended up shooting 100. The last 6 holes or so turned into a total crap shoot though. Walking in the heat, with a little bit of a cold, fatigue really set in. The last few holes I couldn't feel anything and my swing became a total guessing game. But if you look at the front 9 I think it's a good illustration of the kind of issues driver can cause for the golfer struggling to break 100.

Hole 1 - 235 yards in the middle. 155 to the middle. I pull 7 iron which is plenty. Too good and I'm still on the back of the green. But I violate another rule for the hacker. NEVER AIM SO THAT A GOOD SHOT TURNS OUT BAD. I've been struggling some with pulling the ball and I tried to outsmart myself. Even my good shots on the range tend to be 5-10 yards left. I ended up hitting it dead straight and pure . . . into tall grass, lost ball. triple bogey.
--Test Result - Driver had me hitting 7i instead of 5i. not driver's fault I hit a bad approach.
Hole 2 - learned my lesson on alignment. aim right of the green because there's water on left, but into a safe area. pull the ball kinda bad, but still hit the green. Par
Hole 3 - It's a short hole, and a well hit driver brings water into play. Mediocre 3w goes 215. 9 iron 135. 3 putt bogey. Yuck
--Test Result - good decision to not hit driver.
hole 4 - Wide open fairway. aim down the middle. 230 yds, left of the fairway a tad but a good lie. A chunky 52* barely catches the green. two putt par.
--Test Result - a BAD approach shot still found the green and I parred because of it. vs maybe an 8i hanging back. tough to say. a bad 8i probably misses the green. The risk/reward is in favor of driver here.
Hole 5 - again water on the right but not reachable. hit driver 230 and it's right of the fairway in a bad baked lie, behind a tree, 160 out. I try a dumb shot and dump it in the water. triple bogey
--Test Result - So part of this is course management for sure. I shouldn't have tried the hero shot. I couldv'e punched it a few yards into the fairway and probably had a 9 iron to the green and a likely bogey. a 200 yard tee shot in the middle actually have been pretty good because of the dogleg. losing the shot right cost me 20 yards easily. probably still would've been hitting 7i. dunno if it was worth the driver on this hole
Hole 6 - A longish, straight hole. Driver is 230, barely off the right side. Chunky 7i goes 150 and hits green. Missing short would've been a tough chip so good decision to club up. Par
--TestResult - I don't par this hole without driver.
hole 7 - Par 3. Miss green left a tad. up and down for Par
hole 8 - Here we go. very tough driving hole. but playing the middle leaves you 200 out. BAD drive out of bounds. 2nd drive in the trees. compounding errors on approach. +5. ouch.
--Test Result - ehhhh. probably should've played for bogey here?
hole 9 - another bad drive. attempted punch out from the trees is barely gets to the fairway. compounding errors results in a triple.
-- Test result - Again a more conservative approach after the bad drive probably gets me a good chance at bogey. It's on me that it turned out really bad, not the driver. But on a par 5 I probably should've played for 3h-3h-Wedge and had a good chance to par.
Overall I think I was certainly no worse off hitting driver. With better course management I coast to another 95 even with some bad drives. For sure it got me a couple of pars that I otherwise wouldn't have had. But it
felt worse throughout the day. had me more frustrated and pressing. YMMV