You might be surprised! The Mullvad client is super well designed and usable for newbs, and I'll bet a lot of their business is from people whose more technical friends told them it was a good idea. There's a reason that Tor warns users that posting personal information or using accounts with their regular credentials compromises anonymity.
I wish RSS had more surface area with general computer users, but I reckon even being called RSS makes it unlikely. Folks in tech often forget how intimidating opaque names can be for nontechnical users.
Not being a Mullvad user myself, I wasn't sure if people tend to use a Mullvad client or a generic VPN stack built into their OS, but the Mullvad client could simply display news like this to the former set of users leaving only the latter set to configure a separate RSS client or whatever.
I wish RSS had more surface area with general computer users, but I reckon even being called RSS makes it unlikely. Folks in tech often forget how intimidating opaque names can be for nontechnical users.