When something like that happens, and you’re the fan of the club it happens to, you abandon logic and just celebrate the achievement as if it’s the most impressive thing in the world. If the other big 5 clubs all went bankrupt, and united won the next 10 league titles do you think our fans would ever stop rubbing it in? Even though the competition isn’t there, the right to gloat remains. Besides, Celtic are only registered to play in one league in the world, so all they can do is win that league. 10 in a row will be the best part of the clubs history, surpassing the 1967 victory. Yes it’s been an easier path, but the end goal doesn’t change. The chance to say 10 in a row to rangers fans knowing that it would take a minimum decade + 1 year of dominance for them to ever beat it is just too amazing for any real fan not to milk every second of it.