If you are planning to help, just help in silence. This is not really the time to be thinking about promoting Bitcoin and and other cryptocurrencies through donations. I can't imagine to see a donation with "Donation from Bitcointalk community" label on it. The move is just the same with politicians taking advantage of the situation by having their faces and their names placed on the relief goods/items they give to their constituents.
There is nothing wrong with that, but lately there have been many scams about donations for COVID-19 viruses using cryptocurrency, of course this will also be an impact because this is very detrimental to cryptocurrency, and it's best if you really want to make donations. It's better for you to give historically what was done before so that donors can trust more.