If you're happy to pay whatever it costs to host then there's no other disadvantage to this.
The only thing I can think of is if you somehow end up at odds with an admin of a big instance and they defederate your instance. Or perhaps in the future major instances decide to only federate with instances of a certain size, for some as of now unpredictable reason
Yesterday I discovered, after nearly 4 years in our house, that the showerhead has a heavy massage option.
Last week I'd mentioned to my sweetie that I'd like to look at adding a new shower system to the long term list of Things To Buy. We're currently in scrimp and save mode after a month-long Europe trip in August. I went to a Rammstein concert in Poland and halfway through I realised I was at the end of my headbanging days - the incredible shower system in our hotel and a very firm mattress was the difference between walking out the next morning or what felt like would be the rest of my life in a wheelchair.
So I'd resolved to get a new shower system, wasn't going to have the money for a while, and then just made my discovery. So I'm feeling like a million bucks this morning, and saving a thousand or so too.