I do not think it brings any threat since such designs is normal especially when it is trending. There are even stalls selling that kind of design, unless a person bragged that he has Bitcoin, I do not think that wearing such a design indicates that the person is holding BTC.
Therefore, some people not easily trusting those who wearing BTC-logo shirts and choose to adopt an indifferent attitude towards anyone. I personally also opt for a neutral stance toward people wearing BTC logos oh their shirts, just acknowledging that they are wearing BTC logos not for some bad reason. As long as there's no official government prohibition in my country regarding rules for wearing BTC-logo clothing, it's still considered safe if you have positive mindset. If there's no fear of asset confiscation, then billionaires like Bill Gates, Elon Musk, Warren Buffett, and others wouldn't be sharing their wealth, right? Even those of us who don't have more than 1% of their wealth act overly protective.
It's better to be reasonable. There are many people wealthier than us, so why should we fear threats to our BTC assets? After all, if criminals want to make more money, they could choose to kidnap other billionaires rather than us.