Memes

These words have meaning and there's confusion when people mean something else in the US. American Democrats are right of center in global politics. Liberals (global definition of the word) have controlling presence in industry and politics. They literally don't want anything significant to change because it is set up exactly the way they want it. They can lobby to get what they want. They can contribute unlimited amounts to third party campaigns.

Liberal means "not conservative' because our Overton window is fucked six ways to Sunday.

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.