“Normies” are not “microbloggers”. Most people just want to follow what their friends and family and news organizations and “influencers” are posting.
My biggest gripe with the fediverse (indirectly) is that all the information I would get on Twitter about my city is not available to me - concert announcements, restaurant specials, road closures, major news, hobby meetups, etc. They’re posting on Facebook and Instagram (which is IMO the worst of all social platforms) and slowly adopting Threads. My issue with these platforms is mostly regarding the algorithm deciding what it thinks you want. This is driven by advertising.
Twitter didn’t really pick up steam until celebrities and news outlets were posting and engaging on the platform. Then they pushed hard for ads to increase revenue and expand features and stability (for better or worse). Then they just got greedy. Then they were sold for the dumbest amount of money in the history of sales.
Getting normies here means getting influencers here. Influencers want to make money for being assholes. If you don’t want influencers and ads here, don’t ask for the normies to come. Accept the beauty of this micro micro blogging platform. If you want to share outside the open fediverse, embrace cross posting to the closed platforms. That’s kind of the whole point of it. You can post in your tiny little corner while still engaging with the more popular platforms.