Here’s the update about the brachah shehecheyanu:
Someone in avelut can say the shehecheyanu brachah, like on a new piece of fruit at Rosh HaShanah; they can also wear someone else’s used clothing. So even if the clothing is of some value and that would mean that they would say the brachah on such an item, and even though it may be a really valuable piece of vintage clothing, let’s say, and even that they may be really happy to be wearing this item, it’s not a problem. The newness, for an avel, is the problem.
Isn’t that fascinating? So new is not good, or perhaps because it is too good? Or is it that old is good and we should embrace the old?