There is quite a bit about Bliss in this post from @gael
I am one of the “hard-core Android users” he refers to and I don’t like Bliss, because I am used to - and I like - ‘traditional’ Android launchers.
One of the great things about Android is that there is almost always a choice: if you don’t like something you can almost always find an alternative that you like better. So, after using OpenLauncher for a while, I ended up with Lawnchair 2 (from Aurora Store), because, unlike OpenLauncher, it allows you to to resize homescreen icons.
Personally, I think that /e/ OS should offer a choice of launchers, in the Setup Wizard, but @GaelDuval like Bliss, and he’s the man paying the wages 
I really wouldn’t let Bliss put you off using /e/ though. Install a different launcher, and enjoy a great OS!