I really wish these points were made in a non-political / platform-specific way because if you care about this issue it's ultimately unhelpful to frame it as if this is an issue with just X or conservatives given how politically divided people are.
I do share the author's concerns and was also concerned back in the day when Twitter was quite literally banning people for posting the wrong opinions there. But it's interesting how the people who used to complain about political bias, now seem to not care, and the people who argued "Twitter is a private company they can do what they want" suddenly think the conservative leaning algorithm now on X is a problem. It's hard to get people across political lines to agree when we do this.
In my opinion there two issues here, neither are politically partisan.
The first is that we humans are flawed and algorithms can use our flaws against us. I've repeatedly spoken about how much I love YouTube's algorithm because despite some people saying it's an echo chamber, I think it's one of the few recommendation algorithms which will serves you a genuinely diverse range of content. But I suspect that's because I genuinely like consuming a very wide range of political content and I know I'm in a minority there (probably because I'm interested in politics as a meta subject, but don't have strong political opinions myself). But my point is these algorithms can work really well if you genuinely want to watch a diverse range of political content.
Secondly some recommendation algorithms (and search algorithms) seem to be genuinely biased which I'd argue isn't a problem itself (they are private companies and can do what they want), but that bias isn't transparent. X very clearly has a conservative bias and Bluesky also very clearly has political bias. Neither would admit their bias so people incorrectly assume they're being served something which is fairly representative of public opinion rather than curated – either by moderation or algorithm tweaks.
What we need is honesty, both from individuals who are themselves seeking out their own bias, and platforms which pretend to not have bias but do, and therefore influence where people believe the center ground is.
We can all be more honest with ourselves. If you exclusively use X or Bluesky, it's worth asking why that is, especially if you're engaging with political content on these platforms. But secondly I think we do need more regulation around the transparency of algorithms. I don't necessary think it's a problem if some platform recommends certain content above other content, or has some algorithm to ban users posts content they don't like, but these decisions should be far transparent than they are today so people are at least able to feed that into how they perceive the neutrality of the content they're consuming.