Yet members of A2K are not lexicographers with linguistic expertise.
I have worked as a lexicographer both as an amateur and as a professional. I published my first dictionaries for fun when I was a teenager and was paid to help with the lexicography of several others in my early career with linguistics (spanning lexicography, teaching the language and both live and written interpreting). I founded this precursor to this site explicitly to offer help with language online (though I have since moved on from language as both a hobby and a profession).
I stopped helping you because you argue with me when I try to help you and it's pointless. You can lead a horse to water but you can't make him drink and I'm not going to waste my time trying to convince you to accept my free help.
I've seen you argue with several other people who I know were experts in the English language (professionals, not just native speakers). You are arguing with people who have spent decades as professionals in ESL, interpreting, linguistics, and lexicography in addition to the garden variety native speaker (who is almost always right when you insist they aren't').
When dealing with an ugly word like notoriously, it is likely to evoke unpleasant memory of native speakers. That is the problem.
No, the problem is that you stubbornly argue with people who are right, and they give up telling you the right answers due to your penchant for making giving you free help unenjoyable.