Now here's the thing
Yes, timber counter is great. Trip sapling is super frustrating, and it makes a lot of bad MUs much easier.
BUT
It's a trade-off, there's no denying that. The tree and the axe are both potent killing weapons, normally. Now they can't be used for that.
There ARE certain times where I'd prefer regular timber, because regular timber IS still a great move. In no way does trip sapling damage the meta, thats like saying diddy's banana was unhealthy for the meta. Yes, it lasts longer, and it can trip multiple times, but you HAVE to keep it in one spot. Its not a guaranteed followup because you're not sure when your opponent will fall for it. It's got a WHOLE different reason for being there, than Diddy's banana.
My only point was, that trip sapling is GREAT, BUT there is a trade-off, whereas there's no real trade-off between regular balloon trip and EBT.