Maybe it has something to do with money. From what I understand, Kick.com pays something like 95/5 to the streamer vs. 70/30 with YouTube and 50/50 with Twitch. The founders of Kick.com have shady backgrounds and they have less moderation which attracts those streamers accused of homophobic, misogynistic, and predatory behavior.
edit: corrected numbers
I play on the right. That is also where I tend to keep videos and music open. Left is for general web browsing and the terminal.
Nothing OS is a custom OS by Nothing Technology Limited built on Android. It is not privacy focused like you would get with GrapheneOS but has very little bloat. It is proprietary to Nothing phones. There are unofficial versions of /e/OS available on on XDA for the CMF Phone 1. The Fairphone 4 also has the ability to run custom ROMS like /e/OS and LineageOS.
Here is a video talking about putting /e/OS on the CMF Phone 1: https://youtu.be/TkTzmM9izCo
While, I'm not sure if you're in the US or elsewhere, here is my response from a US perspective. Another consideration is what carrier do you use, especially if you're in the US. A phone with a user-replaceable battery that is under $300 is going to be hard to find, at least new.
My recommendation for a new phone would be the CMF Phone 1. While the battery isn't user-replaceable in the "pop out" sense, it is designed with a more accessible battery for easier replacement than most modern smartphones. https://us.nothing.tech/products/cmf-phone-1
For used, this is also challenging. If you can find a Fairphone 3 or 4 in the US that works with your carrier, that would be perfect. The Fairphones have batteries that are removable by popping off the back cover. They are typically around $300 I think.
My main point was it is probably about the money. Afterall, streaming is a business and a difference between what site pays versus the other can be huge.
I then added about the shadiness, agreeing with what you wrote in the OP that "people dislike Kick saying it is less ethical." I will expand upon that idea since you are accusing me of having an "proletarian" agenda. The "shady" part is based on the founder's background in online gambling (stake.com), particularly crypto gambling, as ethically questionable due to potential for addiction, financial ruin, and regulatory grey areas. Also, the purpose of Kick, especially in the early days, was suspected to be a way to funnel traffic to Stake.com.
Even more, with the shadiness, Kick's stated goal is "creator-friendly" moderation and avoiding "cancel culture," the effect of their looser policies has been that controversial streamers (especially those who lean right or have been associated with right-wing talking points) find a more welcoming home there. This leads to the "right-wing coded" perception.
Streamers weigh both the financial elements and the ethical environment when choosing a platform. For many, Kick's controversies make it more complex.