Honestly, unless that person was also wearing a tinfoil hat, no, I don't see how one could be suspicious of that. I have not had an adversarial relationship with Mr. Monster or his company until quite recently (despite his longstanding attempts to create one), when it began to be revealed that Mr. Monster had apparently had a direct hand in the doxing and harassment of myself and my family, and when that harassment escalated. And I will note, as I have already noted, that when my feelings towards Mr. Monster turned adversarial, I stopped editing the Wikipedia pages—as is proper.
But if someone was suspicious that such a thing had happened, hopefully they would also know that citations are included inline in Wikipedia articles for the very purpose of allowing readers to examine the veracity of statements in a given article.