IMO Steam is only “pro-consumer” in comparison to some of the really nasty DRM schemes out there. In recent years they’ve done a bunch of annoying things, including:
making it harder to access older versions of games
gradually changing the fundamental operation of the Steam client to become browser-dependent for everything (it used to be a much lighter and faster application that ran using their own code before it became basically Chrome)
basically orphaning the Steam skins feature with update after update successively breaking more and more things (related to the above)
making it harder to use older versions of the Steam client (okay, this might be hard to avoid technically, but still)
And of course, it’s still basically DRM-agnostic for any additional layers of DRM, such as and including Denuvo. As well as having no convenient way to just turn off updates, which means that if you don’t take your own precautions and a bad update got installed, well, good luck.
To be fair, Steam’s own DRM is still relatively light (compared to some other schemes), and it sometimes does technically have DRM-free games (if Steam acting as a downloader doesn’t count as DRM), and it offers tons of cheap games, but all of these features (or better, such as DRM-free installers) are easily available from various competitors. Steam’s main attraction these days, frankly, is its selection, with a bunch of games that can’t be bought elsewhere. which is a sort of market dominance that it only maintains by virtue of already being big.