There are pros and cons to both subjects.
Self-taught and taking lessons..
I'm a self-taught drummer and I have my limitations bcos I don't have a teacher or somebody who is better than me who will pinpoint my weaknesses.
It can be frustrating though, not knowing those stuffs that ppl taking lessons know..
Bcos if U want to survive and excel better in the musical line, U need to know how to read those "taugeh". Crochet, quaver, semi-quaver, minum, etc.. By taking lessons, those fundamentals ar embedded in ur head.U can instantly know the time-signatures, the beats, tempos, where to put the fills, where the CODA is, etc.. All these are compulsory if U want to commit urself to become a sessionist, full-time musician in the entertainment industry, etc..
The main advantage abt taking lessons is U will have credibility when U are undergoing auditions. If the songwriter were to just present U the drum scores to that particular song, it'll be a piece of cake.. Get what I mean?
There's no doubt that U can learn how to read a PROPER DRUM Tablature by urself but the question is, "how long can U tahan and how much can u understand without proper guidance?"..