The guy writing the tutorial on shadowbans doesn't even know if he's shadowbanned.
Another way is to use this here Shadowban Analyzer (open it in an incognito window). It will test to see if your posts show up for #hashtags cited within their respective captions. (UPDATE: this tool indicates I’m not shadowbanned, which greatly complicates my understanding of what’s happening, since I know that my following still does not growing):
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The guy writing the tutorial on shadowbans doesn't even know if he's shadowbanned.