I don't quite get the Helium hype if I've to be completely honest. Go to their website and all they be doing is giving you bunch of "feels good" sentences that tell nothing (or at the very least very little) on the browser which is honestly my biggest gripe with Helium as a whole, that it tells nothing. Go to other browsers github/website and they'd have a list of changes that they have done to the browsers, see Librewolf, ungoogled-chromium, and even Thorium as examples.
How I see it in a way is that it's essentially just ungoogled-chromium, but with uBlock Origin (uBO) pre-installed, which I mean sure I guess? Helium as a whole feels like it's trying so hard to appeal to "commoners" which is fine-ish, but for once it just strikes me as being very suspicious/weird which makes me feel iffy. Why would so many people use this over just ungoogled-chromium? If you want uBO then just install it yourself, if the justification is just because it's faster then that's the wrong way to look at it. As I've stated before, measuring browsers based purely on speed metric is wild as if everyone want their browser to be overly speedy then we'd just be on Chrome & Edge over these nerdy alternatives. While one could argue that Helium is just a faster ungoogled-chromium, I'd still be using ungoogled-chromium anyways since I simply trust them more over a browser that doesn't really tell anything about themselves.
At the end of the day, the main compliment that I can give to them would be the fact that they aren't overly gimmicky (cc Zen Browser). The addition of !bangs feel bit mixed for me since the year is 2025 and any notable search engine would already have !bangs going on for them. Sure having it built directly on the browser itself is better since now you don't have to directly interact with the search engine, but in a way it's kinda like a trap where now you're "forced" to use Helium if you want a browser that supports !bangs.