Splitpushing was straight up impossible since a waveclear tank could hold a splitter under inhib tower just by aoe clearing waves, building defense, and relying on the laser to bail them out from being dove even if they were like 3 levels under.
Splitting is still nowhere near as powerful as it was S3 with the addition of baron recall, auto-homeguard post 20, and a million ways to catch up in XP without actually doing anything. This was literally the reason why they took it out; they explicitly stated it.
Honestly I don't like tanks or heavy snowballing any more than the rest of you, but if you couple a laser tower with a waveclear mid and a tank to stop a splitpush (since splitting is how you deal with antisiege champs like
) then the meta isn't gonna be any less cancerous.
Game's also not as snowbally as you would think. If you take an inhibitor at the wrong time (no objective on opposite side of map coming up within 5 min), then you just denied yourself a full lane of farm for 5 minutes and gave a literal fuckton of gold and exp to the enemy team. I've lost and won several games through comebacks because of this mistake alone.