The short answer is: nope! Liking to wear "feminine" things or acting in ways that people think are feminine does not make you any less of a guy, trans or otherwise. After all, if a cis guy liked nail polish, or was very "feminine" in his behavior, we wouldn't say it was automatically proof that he wasn't a cis guy. The same is true for trans guys.
Unfortunately, it sounds like you've bumped into people who think otherwise and have decided to be jerks about it. I'm sorry you've encountered those messages. There are people out there who still believe in very narrow gender roles, and think that in order to be trans, you have to align with those roles (toxic masculinity can definitely be a factor in that). That can result in trans guys feeling like they can only act super masculine, and trans women feeling like they can only act super feminine in order for their gender identity to be "real" (that kind of mindset also doesn't leave much room for non-binary people). This article from our trans summer school series does a good job of breaking down why those ideas are nonsense: Trans Summer School: Am I Trans Enough?
It sounds like you've found that those more feminine elements actually help you feel more comfortable in your own skin. Have you been able to find things like articles or videos by trans guys who have that same experience to help you feel less like an outlier?