PoW has nothing to do with blocksize.
ASICS have no hard drive. they never touch the blockchain or validate transactions.
all they receive is a 256bit hash and a few rules to comply too (difficulty)
a 0.000250mb block and a 0.999750mb block send the exact same amount of data to a PoW asic,
arguments that PoW cant scale is a fake narrative just to try making sheep think its ok to ruin security purely for the sake of greedy people thinking they can get some free bitcoins from running a node in their basement
dont beleive me..
unscrew an ASIC and look for a hard drive