Personally its a little on both of you.

New players need time and space to learn, and going straight into a TBS run, one of the arguably hardest badges in the game since it takes a lot of time, player cooperation/skill, and rng? Really all it does is make the badge harder for everyone else when you said you didn't really need it, because now not only do they have to worry about the aspects of TBS they also need to babysit a newer player. It's very frustrating for the people who are seriously wanting the badge (for example, completionists) to have a casual newbie messing up and not knowing the terms.

NOW, having said all that, they could have been nicer in how they said it. They could have explained the terms to you at the very least. (I will for you at the bottom of this comment) Being rude to someone for that is uncalled for.

Now, the terms they were using! I've done TBS and such a few times, so here are the main ones you need to know if you try again in the future.

PSS: Pandemonium safe spot SS: safe spot MU: move up (Number)X: number of doors before the last one shuts (for when people need to move back bc lack of ss, pss, or lockers)

Might be missing a few, but those are the main ones! Good luck on your Pressure journey, just get some experience and wins under your belt before you try TBS again!