They don't owe you an answer, they never did, principally when the request is to do free marketing for other sites.
That was a give and take, or a win-win if you prefer it put that way. The My Opera users created nearly all the content on the site and added value (spammers excluded) to Opera Software. Spammers included, the equation may have been different.
Though I obviously didn't agree with the decision to shut down My Opera (there would not be a choice in changing software), at least the transition has been handled well. What String proposes above is also a part of that transition, bloggers and posters that grew up with Opera, and either could join one of the hastily opened sites, or be scattered for good. These sites are in the Opera ecosystem so to speak.