First thing I do in a new app or new web service is click all the stuff, try and get a lay of the land and understand the UI metaphors. It's much harder to do if there is a twee, condescending guided tour "hyuck hey there champ didja know the gear icon that says Settings next to it is where you can change some settings?" stopping me from doing that, and names hidden behind hover popovers and crappy monochrome SVGs of....shapes to serve as icons.
I am very unlikely to need every part of every tool, app, or service I use. I need to do one thing with it right away, and I need to find my way there and experiment to see how it works. I don't give a shit if I can have it waft my farts if I'm trying to compress a gif or something, the fart-wafter button just needs to be clear so at a time when I go "huh what does this do" I can figure it out non-destructively to see if I'm interested. If you need a big popup saying "We just added the Fart-Wafter! Want to know how to find it?", you've failed, utterly.
The other side though is sometimes even more important it's what this thing does as a high-level introduction so you can understand all the things you're supposed to be able to do depending on the software this is some sometimes not obvious and that explanation can be really helpful to understand all the things you're supposed to be able to do and thus plan to use all those features.
Instead add the killer feature: a feature search box ala Google Docs.
Plus, there's no way I'm going to remember whatever the tour tells me by that time anyway. To actually learn the product you need experience to lock in what the manual says
Correct, yes.
1) Push vs pull. As you identified, ls doesn't stop you from doing the thing you wanted to push the man page on you when you don't need/want it. ls just does the thing you ask. man also just does the thing you ask. The product tour is a sign that the developer doesn't understand consent and is trying to get the user to do what the developer wants, not what the user wants.
2) It's infantilizing. The product tour assumes the user doesn't know what they want, and doesn't know how to RTFM to learn how to do the thing they want to do. It treats the user as having no agency.
2.5) It's a tacit admission that TFM sucks and R-ing it isn't a productive use of your time.