Technically yes, they could shift spending like that, but it would look bad enough, I think at least some would help where you want. Either way, asking for them

Technically yes, they could shift spending like that, but it would look bad enough, I think at least some would help where you want. Either way, asking for them not to shift funding as appropriate would be asking to control other finances not your own. If they allowed targeted donations to firefox/quantum/rust/MDN I would donate, as I'm sure many other will. As it is, I don't and won't even if firefox were to fail.