Sorry I’m not sure what you’re referring to with bloated for first things? I use the web app and it’s fine.
Second the ads problem just turns out to be just paid promotion for game developers rather than ads so no and you can opt out of it so you will not get the pop-up, it is not a permanent opt-in. (and even opt-out you can choose to do quests if you want to)
However I respect your decision I just want to make sure this is clear