Disabling downvotes by server admins on Lemmy is dumb and does not make any sense.
By default, Lemmy allows downvotes globally. However, when a server disables downvoting, it is similar to using a feature that is usually reserved for enterprises and very small, non-federated communities.
If a user prefer to not see downvotes, they can disable it by his favourite client settings, but the rest of the community should not miss this functionality for the pleasure of few users.
It's to encourage posting and comment by having a positive environment, especially on hobby community/instance. Lemmy is still small and post isn't as many, and its full of people who is downvote happy and will downvote topic they don't understand or care. Try build a community around that, i'm sure it won't survive.
If a user prefer to not see downvotes, they can disable it by his favourite client settings, but the rest of the community should not miss this functionality for the pleasure of few users.
Let me flip it around:
If a user prefer to see downvotes, they can go to another instance that support that, the admin paying for the hosting shouldn't need to listen to a few user.
It's a setting, it's a tool, let people building the community/instance adjust it how they want instead of dictating how they choose, isn't that your point?
You can't force people to be positive, they might still leave negative comments.
Lemmy is still small, so users don't have the option to choose servers as they please. For instance, I'm looking for an instance where you don't need an email to register (for privacy reasons) and where you can quickly create an account (I don't have the patience to wait for days to get my account). Also, it should have a good number of federated servers working with it.
With these specific requirements, there are only a few servers available.
Toxic positivity is just like woke, it can be anything you want it to be!
For real though, not allowing down votes is not toxic positivity. You don't go to an orgy and start yucking everyone's yums. You're not being told you can't dislike things, you just aren't allowed to vocalize it at no cost. And if you do decide to vocalize it in a comment, you may* be kicked out of the orgy because it's a fucking orgy and that's the rules. There's literally no point to it except to shit on others, which you wouldn't do at an IRL orgy**.
*There might be a room for sexual degradation
**There might be a room for scat
Toxic positivity is telling someone their negative feelings (not opinions) are invalid. The existence of this term still doesn't make people at an orgy assholes if they tell someone who's bringing down the mood to go away. It's literally a fucking party, don't go there trying to make everyone worse. I could play devil's advocate and say that the act of throwing a feel good only party is toxic positivity as it's just as likely to enable escapism (from bad feelings) as it is to be totally neutral, but fuck that. Sometimes the cure to a bad mood is acknowledging it, and then escaping it.