can we stop with the divisions and no true Scotsman bullshit on the left

No, because (A) liberals are by definition not leftists regardless of how little they know about their own right-wing political advocacy, and (B) ignoring the fact that there are differences among leftists (and liberals and leftists) is both wholly unproductive and furthers political alienation of the people whose opinions you want to be able to conveniently pretend don't exist.

Additionally, just because you don't understand leftists when they tell you that liberals are not leftists, doesn't mean they are engaging in a No True Scotsman fallacy. It means you haven't engaged enough with them to understand.