I think speaking English in itself was never a problem to get in. But of course the tourist vibes get stronger if the person doesn't know the "definition of cool" that is expected and appreciated in that particular club.
Take this example [1] of a tourist they probably let in by accident and regretted it. :)
Some of them are open for example only between 2am and 8am with a nice variety of other drugs available.
The thing about Berlin clubs is they care very strongly about the vibe and being cool, and/or protecting those deep in psychedlics or other stuff. Aggressive, drunk assholes ruin that so they are verboten in some spots. The bars are all happily stocked with non-alcoholic selections. It's not America where you need to make money at all costs fuck the consequences.
Note that these are the same places that will reputedly dump you out the back door if you overdo it or OD, take from that what you will.
Also, I think you underestimate just how much the party scene loves Club Mate over there. That is what we drank instead. It pairs really nicely with molly!
I moved to Berlin to escape the political headaches in Poland while still being close to my family and friends, with no specific goal of partying here, as I've never liked clubs and dancing in general. But from hanging out with expats and sometimes joining them to themed parties in clubs, my takeout is that you have to spend a lot of money on clothing and appearance to show the bouncers that you really belong. Of course places like Berghain are completely random in that matter and the way you dress doesn't change anything (unless you really look like a tourist, I guess), but for most part it's a rich kids club.
In fact, when I got in one club a very cute german girl tried to talk to me on the dancefloor. But I didn't speak any German and she got angry, shouting "aaauuggh!! tourists!!!"
Also, for the clubs that forbid alcohol (hard drugs only!), they will refuse you if you are caught drinking in line or are visibly drunk.
Also, I was told to keep my mouth shut as they will sometimes refuse you if you speak English
At least this is how it was about 13 years ago. My friend was a self-described and un-ironic "hipster", who kept his finger on the pulse of the local underground, and of course he lived in Kreuzberg