Lab is hated?

I recently built lab because I had a horrible non meta deck (Kashtira/blue-eyes). I saw that it was tier 3 on master duel meta and heard on a Reddit somewhere it was a counter to Yubel which I kept losing against. But I just seen a thread on here that said “if you could never face a deck again which one should it be”. A surprising amount of the comments were lab which shocked me because it was only tier 3 and I haven’t run into many people who played it. But then again many people hate Kash and that isn’t even tiered.