To live wherever he wants to? Your sidewalk? Your yard? Your home? Yes.
To sleep in a public monument? Not if the law disallows it. If you live in Solana Beach then you have a voice in local issues there, and your voice would have weight.
Frankly, I would expect the DNC and the Greens Party to be on the front lines with so-called "homeless rights" and "patients rights" and "victimhood class" causes. Rightly, we assign special status upon veterans, and confer whatever benefits are available, as a token of society's appreciation. No one is begrudging their honors and benefits. I'm just saying no one has a right to be ignored and left alone to die anywhere, especially in a public park, and especially a veteran.