Assalamu alaykum as brother umar said: Anyway, the first and foremost reason of driving people away from "good Sufi Shaykhs" is the huge quantity and deviancy of fake deviant bid'ati shirki "sufis" around: they drive people away from "real Sufis" more than all Salafis put together. i am into tazkiyat nafs but there is so many dodgy sufis out there im really scared of giving bayat to a sufi shaykh. if someone like muft taqi uthmani lived near me and accepted bayat i would give it to him because he is someone who adheres to the shariah and he is a faqih, someone knowledagable.
Assalamu alaykum even brothers i know who follow the four mathaib, tableeghi jamaat are against giving bayat to sufis.