If it's not *****Official*****, it don't count
and until it is no longer labelled bazballs it isn't exactly time for a 'final verdict'
it is an approach can paper over the cracks ie England batting normally can end up 50/4 same as they can whacking it around, it has paid some dividends but are big flaws in it even when it appears to come off - bowlers get less of a rest between bowls and despite the theoretical question Zaltzman posed it can have limited 'range' ie hasn't exactly produced match winning totals on a regular or even semi-regular basis
and I think it gets bandied about a fair bit more than applies, when Bairstow, Stokes and won matches against the kiwis it wasn't bazball so much as two batsmen cranking it up each match
vs NZL 2022
1st Test 1st inns - England scored at 3.29 rpo overall, NONE of the top order had an SR of more than 77
1st Test 2nd inns - Root guided England home, SR 67.65, only bazballian on show was Bairstow with 16 off 15 balls
most of that 1st Test won by normal cricket, Root with support from Stokes saving England from 69/4
2nd Test 1st inns - England scored at 4.20 rpo overall, Root did score a bit quicker than normal at over 80 SR, as Stokes did in a cameo, but most batted at a mundane rate
2nd Test 2nd inns - England were 93/4, Bairstow instead of trying to prod and poke his way to victory took the ball on with him and Stokes scoring at over 100 SR, but as a team there was little evidence of this 5rpo and above 'approach'
3rd Test 1st inns - Bairstow attacked from 55/6, 162 off 157 balls, Overton scored at around 70 SR, Broad a cameo at over 100 SR, but most disappeared in a hole
3rd Test 2nd inns - pretty much a bog standard chase until Bairstow upped the tempo with 71no off 44 balls,
Some signs the innings tempo was beginning to increase, but not significantly above what you'd get normally ie from maybe 3.0 to 4.0 give or take with maybe 2-3 batsmen per innings actually batting with aggressive intent, although granted if someone gets out for 8 off 11 balls you can't say they wouldn't have gone on but there was still some balance. Now it is openers blasting away, plenty though still batting at a more regulation 4rpo which is an SR of 83.33 compared to 3rpo being SR 50.00 obviously and 3.6rpo which is not what many would label bazballs speed being 60 SR
oh and to reinforce the point, 2nd innings of the 1st Ashes Test England scored at a more mundane 4.12rpo, near a full run an over below 1st innings, 4.26 and 4.01 in 2nd Test. Is just a way of papering over cracks, it can scare some sides into panic and is a decent tactic for avoiding 4 slips and a gully all the time and plodding along at 3.0 rpo waiting to be got out by a good ball, people talk of balls that are 'unplayable' but I've long felt it isn't true, only 'unplayable' if you play conventionally against it ie inswinging yorker turned into a full toss by advancing down the pitch to meet it, playable....