You can achieve what you want with the Autocorrect feature. (well... almost*)
The thing is that adding a glyph into the "correction" field is a bit tricky, but doable. Here's how:
First, go Edit > spelling > enable Autocorrect.
Then, you'll need to locate and modify the Autocorrect XML file.
Most likely, it does not exist already, unless you already ...
I am doing this with m2 in surface areas. Assuming you're using a Paragraph Style, you can attach a GREP Style to that and each time there's a word of any length ending in 'tm' followed by a space or a comma, a particular Character Style can be applied so that the 'TM' is automatically formatted.
Alternatively, some fonts (you need to check your font) may ...
I would say no.
The VHS logo seems to be registered as a trademark under JVC - a japanese company later purchased by Panasonic.
Not sure how the review process works on Spotify, but they will likely not publish artwork which would include recognizable logos.
Text Variable will be the simplest and most manageable way to handle this - create a New Text Variable for your product name, insert that once. Then copy it in Story Editor - you can Find & replace as text or GREP, paste that one insert symbol/tag and get it everywhere, AND if later the trademark changes.... it's easy to manage.
Hope this helps.