I don't believe asking this question on OSRS gold a runescape associated subreddit will get you any objective answers, as most people will likely say it's no problem. In my eyes, it can become a problem, based on how much time you spend on RuneScape. I suggest playing video games may be an addiction and generally that leads to issues like assigning gambling over things like relationships, eating, doing some type of sport living a life that is healthy. As long as you find a balance between gambling and doing things, I don't really see it adversely.
He sounds insecure, and imo it is not your responsibility to accommodate his jealousy / insecurity by restricting yourself and restricting what you get pleasure out of what hobbies you might have. Restraining jealousy / paranoia is a red flag rather than a characteristic in a spouse. Contrary to the thread's subject - I have had experiences with becoming my current partner to play whatever and RS3. I'm a lesbian girl and none of my prior partners have wanted to test out RuneScape whatsoever [mainly because gaming / runescape is much more male orientated / not especially woman friendly entirely,] despite me trying to get them interested until my present girlfriend [a OSRS participant ] and I did magic mushrooms every month.
Her tripping [we shot 7 grams together over two times ] made her more receptive to trying RS3, made her feel much less judgmental about RuneScape / enabled her to tolerate RuneScape, and since then she's now created a HCIM to join my ironman in the clan I am an admin in. We will do dailies together like nemi woods or caches and RuneScape ability together despite me being ~2700 complete, and after 1.5 months of playing, she's 1.3k full with me educating her and things about RuneScape.
If he is really worried about you enjoying a video game because of long distance relationships you had in earlier times it sounds more like a trust issue on his part, and nothing actually to do with runescape particularly. Everybody games whether it's runescape or fortnite or whatever game you want. That is like saying he doesn't need you to go on your own to the mall because one time you went to a date with someone else. Visiting the mall does not mean that you're immediately going to buy RuneScape gold cheat on someone just because you had a date.