Virtually all of the cycling apparel catalogues and web sites offer team kits. I note that sizing charts offer these kits in sizes ranging generally from S to 4 or 5XL. It would seem a hideous waste for these companies to manufacture these thousands of items if the intent was to sell them only to actual team members. This is particularly true of the larger sizes.
In my view, those who are concerned with what others think to the point where they alter perfectly legal and appropriate activity in their lives should quit riding altogether. After all, there are thousands of motorists who don't want you to be on the road and environmentalists who don't think cyclists belong on trails.
Go ahead and annoy someone.
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Just Peddlin' Around