Holy fucking trainwreck. There is way more going on in that interview than just a boatload of drugs. I doubt that it's simply because he got caught in the midst of a bender having to do an interview he wasn't prepared for.
Conor should be thankful Jake was there to handle the bulk of the interview, because whenever Mumbles spoke you could literally watch the interview go downhill fast. Jake 100% knew he was fucked and bailed him out.
I am sure Conor's PR team is already working overtime trying to figure out how to diffuse this one.
I'm no Conor fanboy, but holy shit, someone close to him has to get through to him and fast. Lately he seems to be suffering from mental disorders beyond substance abuse. I don't know how you start to determine which one while he's still enjoying the booger sugar (what looks to be 24-7), and I don't know what reason is strong enough for him to kick it long enough to find out, but that man is in need of some serious help.
He presents as bipolar (while using drugs to deal with or avoid the depressive side), and he is definitely anxious as fuck in this video. At one point he looked a cunthair away from a full on panic attack. Would not surprise me in the least to find out he suffered from ADHD with ODD either.