This is just one example of many if you Google. And don't bother trying to parse words to claim this isn't really an example of claiming NATO expansion is benign to Russia's security, it'll just confirm you are engaging in bad-faith.
No, its not at all different. Like I said, bad faith.
Edit: Lol didn't recognize your username. If you didn't begin your engagements on such an adversarial footing, you might get more constructive replies.
"And even more precisely: it's a claim that absolutely no one makes."
"So you're gaslighting yourself, in effect."
Come now, those are very much adversarial.
Regarding the main point of contention: Russia complains about NATO expansion raising security concerns and the response from NATO/US representatives is "NATO is defensive pact", "Russia has nothing to fear from NATO", "This is a new NATO... Its enemy is not Russia", and so on. This list could go on and on. But the denial of NATO presenting a security concern to Russia is just an assertion that NATO is benign to Russia's security. In other words, NATO expansion is irrelevant to Russian security. These terms all mean the same thing in the context of whether NATO and NATO expansion is a security threat to Russia.
Seriously, this is all just the basic meaning of words. If it's not obvious to you, then I don't know what to tell you. Perhaps consult ChatGPT.
So you're gaslighting yourself, in effect.