Yeah saving an image is not as "intuitive" as most people are used to otherwise with current UX patterns.
And I don't find anything wrong with pointing that out, that's all good and helps improve the app in the long run. As lomg as its done politely and in a constructive way like you just did.
I just hate it if people feel like they have to shit on something just because it doesn't do 100% what they would like it to. Nonetheless for a product they can use for free and someone put hard work into it, most likely in their spare time.
Ignoring this kind of stuff is easier said than done, especially when it concerns something you're passionate about and have put your heart into. In my experience, it tends to keep nagging in the back of your head even when trying to ignore it.
Yeah its using the automatic dark/light mode from the OS. However, if the app is open or running in the background and the OS switches to dark/light mode, Blorp does not switch theming and I have to kill the app. If I open it afterwards its using the correct theming.
But since it hasn't really bothered me so far I haven't felt the urge to open a GitHub issue yet 🙈