I'm not fully sure what point you're making - Whether the lack of a feature is "for the best" or "a fast dying feature" or "could totally be added" the fact remains those features arent there.
I was simply pointing out that ryu1 essentially rubbished WP7 on the basis of a not entirely accurate list of limitations it has, when half of those limitations, for various reasons, also exist out of the box on Maemo on the N900, a device he's considering buying - When he's using that list as a reason to not buy a WP7 device, it's clearly pertinent to point out the limitations which also apply to Maemo.

Yes, some of the functionality can be added through additional software, just like it can on WP7. Yes, some of it can also be fixed through updates, however barring the community SSU it's highly unlikely Maemo will ever get any more, whereas MS have committed to improve WP7's functionality pretty promptly.