His patrons lavish him with gifts because they don't want him to retire, not because they want a specific ruling.
Keep doing exactly what we want you to do, or the money goes to someone who will.
Which is also a message to the rest.
You are correct compared to the $320k/year salary these empty nesters pull these things seem not that expensive. So why not just save up and buy them himself?
Yes, RED FLAG. Because apparently he likes nice things and spending money so much he can't seem to afford them himself or forgo the gifts and spare himself the scandal.