No, but we added some new requirements to make it more difficult for relatively new or unused accounts to edit taxon photos, due to the troll issues we had and because editing taxon photos are big changes - doing so can affect the site for hundreds or thousands of users. I recommend that you keep adding observations.
And to be honest, there are many other things you can do on iNat to help out, such as adding identifications or annotating observations, which will have a much bigger and broader long term positive effect on the community, I recommend focusing on those.