You must have a lot of expensive stuff crammed into your config.fish file, for me fish takes < 1 second to init.
Oh-My-Fish[0] is the preferred and popular plugin framework for Fish. The guy behind Fisherman abused DMCA to discredit OMF, which was a pretty shady tactic for an open-source project.
I am one of the guys behind Fisherman and I didn't abuse the DMCA to discredit OMF, on the contrary, I used it to have my name properly represented in their AUTHORS file.
Now, one thing I am accountable for is, spending days and weeks nurturing and improving the project when I was involved with it. I don't know where you get your facts from, but I urge you to pay a visit to the contributor graphs in the OMF GitHub page and see who's done what and how much.
> is the preferred and popular plugin framework for Fish.
Not according to reality → http://why.fisherman.sh
Greatly disagree on the fish startup time, for me it takes approximately the same time as bash. Can't comment on zsh though.
for example (| is the cursor and everything after it is grey text)
>echo hello world
hello world
>echo |hello world # alt-f
>echo hello| world
Fish and oh-my-zsh both take about 5 seconds to init though. If you don't like that you should be using prezto (which is the fork he mentions in the article)