Yes, it's not the same person who made the chrome ad speedup, but if you read litteraly the first paragraph it says ADD-ON PORTED FROM: link, AUTHOR EMAIL: email, giving creadit to the original author

It has "This add-on in not actively monotored..." label because "Extensions that are not regularly reviewed by Mozilla staff will display this caution on AMO". Click "Learn more" on the mozilla's message to read about it. It only has 7k users, Mozilla aren't going to employ people to cheack this add-on all the time. Yes, it is a warning, but it's not a sign that it deffinetly has malware

Lastly, it doesn't work IF you don't read the second paragraph where it says how to make it do its job

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In terms of features, I'm more than happy with the add-on, thank you, DincaAlin :)