Yup I just tested it and that seems right to me.

I tried testing some other rooms like this in the earlier levels (most of the midbosses, etc), but a lot of them have screen scrolling (probably triggered by a sort of 'wall') that forces you to stop in place, making it impossible to jump over the trigger. It might be possible that some of the levels from the original games have arena fights that can be skipped by avoiding their floor trigger. Of course, its possible that they also have 'wall' style triggers instead of floor triggers, but it might also be that they have really tight spacing.

Matthwe's ares NG+ hardcore run somehow managed to skip enemy spawns in the first lightning spike room in stage 6 accidentally, which saved him a few seconds. How is that possible?

If we can figure out exactly what location the game checks to start spawning the enemies, then it might be possible to skip the spawns, in much the same way that red key skip works.

@Liv I have a question regarding requesting moderation. I've submitted multiple runs for the game A.R.E.S. Extinction Agenda EX, but it's a pretty obscure game. My runs would be the only ones in the category, and the only other runner for the game (who is also the sole moderator), Papajasu, last submitted a run 1 year ago. I checked his profile history, and his last site action I could find was a forum post from 9 months ago. Looking at the mod's twitter (which was the recommended first point of contact), he's recently announced he'll be on bed rest. This means he would be unlikely to be able to verify any runs, and for good reason.

Should I still wait the ~3 weeks to see if I can get in contact with him, or would it be appropriate for me to get modded?

Some bosses can be shortened considerable via solar flare (Goliath and healthbar1/phase2 minos cannon, primarily).

Many others simply have attacks that waste your time (stage 2, stage 4, stage 6). Has anyone found a reliable way to kill those peskier, time wasting bosses within just a few cycles? Stage 2 and 4 in particular are annoying because they spend so much time being inaccessible or invulnerable.

The only few damage-increases I've found so far are solar flare for multi-body enemies and blazing fist for enemies that stay slow enough to be hit (but then it has significant cooldown, and stops if you are hit during startup).