Yeah.
There is a theory on Youtube about some standards a Conquers haki user must have, and explains why Teach wont have it.
One of them, is honor, all the emperors fights and do anything following their rules, for example Luffy might say that in a pirate fight there is no rules, yet he wont cheat to win since he wont feel right.
The same for Kaido, he till date (or when he died) has regrets winning against Oden due help of the old lady, reason he killed her after that incident, he doesnt feel he won, since there is no rules but he needs to prove to be the strongest in a 1 vs 1.
Conquers vs Cheaters, Teach is the best amd strongest cheater, he will reach the top without conquers haki and with no honor, the opposite of Luffy.