I am very not sorry to tell you that you are wrong !
I’m subscribe to multiples PeerTube channesl with this account, Lemmy being my choice interface to access it and I’m convinced that Pixed/Lemmy is a great match considering the huge number of community where the content is primarely picture a.k.a all meme and animal picture communities.
I have first-handed post owl pictures on !superbowl with my PixelFed accound. Just like I’ve been posting from Bookwyrm and Sharkey and many other fediwares.
Lemmy is a great place to post to, but it is harder to post from Lemmy to another part of the fediverse as every Lemmy post must be sent to a specific community.