As less than 3% of users have Opera I think you'll be fine. 
Posts made by OperaUser9879
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Opera for AndroidRE: Opera blocking ad-blocking detection needs to stop now
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Opera for AndroidRE: Advertising link at top of start page
Like you I noticed this the other day. I tapped the drop down to dismiss but this screenshot is from today so its going to come back. So am I changing browsers now or is there a way to dismiss it permanently?
