I think you've got a short memory after an anti-climactic end. We've had some all-time classics this season and last (and I started watching F1 in the 80s), including one just 3 races ago on the most unlikely of tracks.
Verstappen was able to stay within DRS much of the first stint, but didn't have enough to overtake. Whatever they do with the cars you're not going to have 60s and 70s Monza slipstreaming battles, with the lead changing every lap. I wouldn't want it either - they'd be great once or twice a year, but races like that should be special, not the norm.
We'll see what 2022 brings in terms of cars being able to follow one another, but don't expect a sea change - the blueprint for F1 and indeed all track-based four-wheeled motorsport isn't going to change now. Everything is micro-managed to the nth degree to avoid surprises and once you've got that you're not getting rid of it. For example if you brought back rock hard Bridgestones they'd still be managed just as much to get the most out of them, just perhaps in a slightly different way, and you'd likely have more races without any overtaking at all now - there wasn't much back then anyway.
I think the best thing they could do in the shortish term is get rid of tyre warmers, as in Indycar. That provides an extra variable when trying to under or overcut other cars, but after a few races they'd likely all fall into line and follow the same strategies.