I am not quite sure why people don't grasp that it's an annual plan for really expensive software.
"Annual plan, billed monthly" is about as easy as it's going to be in four words on a button or by a button.
If you could rent it for just a month now and then, wouldn't you only rent it in the months you need it?
They make it so you can't.
There's a solution: DON'T USE IT.
Ask yourself seriously: what is it you want to do that the Affinity Suite (which costs about, what, £150 and then £20 each for the two iPad apps) cannot do for you. It's not toy software; it's enormously capable (and improves on Adobe's approach in several places). It has surprisingly complete PSD and Illustrator import, it runs Photoshop plugins, it's cross-platform and it runs well on old hardware (at least on the Mac).
Failing that, you have Krita, Inkscape, Scribus, Darktable, Rawtherapee, GIMP if you must, and they are all pretty surprisingly good. Plus there are video options that are cost-effective or free (Resolve, for example, runs on Linux). There are all sorts of viable competitor apps on other platforms.
Adobe aren't really evil -- they are a giant, slow-witted, largely benevolent monopoly, weighed down by a lot of cruft. (They are also fairly reasonable on the phone and support portals). But you don't need to use their stuff; you can create a sane workflow that routes around them with decent tools.
Complaining about a "dark" pattern that up front tells you that you're getting into an annual commitment for something incredibly expensive strikes me as missing the point; the point is subscriptions are tricky and you shouldn't expect to be able to game them.
Vote with your feet.