You are making millions of bells by them opening up their island to you and spending their time being helpful to you by doing so and you don't want to throw them 100k of your 2m? Something presumably only possible because they opened up their island to you, otherwise you wouldn't be there... Who is greedy again?
Listen, some people are asking for CRAZY stuff, like 10nmt. But if someone says "tips appreciated" that means "I am not going to tell you what to pay or have an entry fee, but kindly tip please". Do your waiters and waitresses at restaurants say "please tip me!" at a restaurant?
I mean your argument is sound, but what you're effectively saying is "tipping is an obligation and you're a rude jerk if you don't. It's expected."
And that's exactly what OP said the line comes off as: people expecting a tip and making others feel pressured to do so.
So you both agree - the line indicates the view that tipping is kinda mandatory, you just disagree on whether that's a good or bad thing.
Is there a more polite way to ask for something in return? These people didn’t have to help others for free. I always write tips are greatly appreciated because they are.. Is it fair that I go around tipping what I can but can’t ask for anything in return when I try to help others? No that’s not fair, shouldn’t be upset by this.
No, it is the polite way to ask for something in return. But that's just it: it's asking for something in return. That's the point: it's subtly asking for tips. It's not actually saying no tips.
The way you speak sounds like you feel entitled to tips. Which is fine, because I can understand wanting something for your time and effort. But this is exactly what the OP was pointing out: that the line does kind of come off as pressuring for tips. As long as you know that's what you're doing, and it sounds like you do, then there's no argument.