The problem with fallacies is they are not always clear when and how to apply, which creates a whole new fallacy where people mis-apply fallacies to try and “win” quickly (is there a name for this? The fallacy fallacy?)
A good faith argument would at least call out one or two incorrect points here.
I'm also not familiar with any argument that a Gish gallop must make claims not supporting a single thesis, or that they must be hard to refute (as opposed to simply harder to refute than to state). Whatever it is, I don't subscribe to it, and I don't believe those are the traits which make the argument style inappropriate.
Gish gallop was invented to categorize the specific style of politicians and charlatans that will throw out myriad claims to dismantle and confuse conversations with too many directions, and to have many of the claims be hard to even refute as they are vague. The vagueness and multi-directionality is the usual marker of it.
I don’t see how these claims are meant to move in diverse directions, or how any isn't relevant, each is a pretty refutable small piece of evidence connected directly to determining the truth of the case here.