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.
Well lemmy has a target market if ur not marketing to that market and feel discouraged thats just supply demand sending u a message. By disabling downvoted u are literally forcing shit people dont wanna see down their throats. I guess the solution is now just the liberal application of the block button.