Thats what lemmy exists for... Not every platform needs voting. For microblogs, which usually represent and individual person, having voting would be a horrible idea because it would allow for brigading of small peoples platforms. With a few hundred people you could make sure that specific accounts or groups of people never reach "top".
You can, but its not a platform built around individuals, so its harder or just less impactful to bully individuals. If you try to brigade a community, then you are immediately up against everyone that likes that community so its just a system thats more resistant to bullshit.
but that doesn't help the next person. plus a downvote is good feedback, so we know what we wrote is considered unworthy or unhelpful by others whatever their reasons might be
Thats just not what microblogging is for. Its not a forum, its a blog. If you dont think its worth seeing just dont follow, like or reblog it. If you want a prechewed version of reality then use a feed to only view things from people you like.
A study found that users who receive negative feedback on their posts tend to contribute more frequently, but their subsequent contributions are often of lower quality.
Additionally, there were concerns raised about how downvotes negatively affect new users (who aren't aware of a community's norms, and so are more likely to collect downvotes), and how downvotes stifle diverse viewpoints, helping to create an echo chamber (the so-called "reddit hivemind").
It contributes to a more toxic environment:
Receiving downvotes can negatively affect a user's self-esteem and confidence. Users may experience feelings of rejection or inadequacy when their posts are downvoted. This can lead to decreased participation or self-censorship to avoid future negative feedback.
Frequent downvoting may contribute to increased stress and anxiety for some users. The fear of being judged harshly by peers can create a hostile online environment.