And why electrum.org does not have a link to "requested features" so I should not have to find a place (here) on the web to complain about ?

You can ask Abdussamad (the author of your quoted post)<...>

I tried to, but...
User 'Abdussamad' has not chosen to allow messages from newbies.
I'll post a comment on bitcoinelectrum.com...

<...>to include it in his Electrum unofficial guide.
Or create a feature request issue in the Github repository of the official guide: https://github.com/spesmilo/electrum-docs/blob/master/index.rst

If you haven't find the links to the guides, it's in here: https://electrum.org/#documentation

I read the official documentation : the location of 'electrum' after installation is not mentionned.
I posted a request on github.

Thank you.