But are they going to that for a show? Not really, they don't even care that they should be found out as the owner of it, and for sure that they better keep it private than publicly known that they hold such funds.
Not everyone though, a business related person, influencer, or someone who wants an attention will do it. e.g. CSW, he really care, he's more with attentions than being secured, but unfortunately, he will not.
Also an example for microstrategy and saylor, who wants to influence others business or a person to getting involved on bitcoin.