There is a debate going on around the homies supposedly proving that Linlin is still alive. Here is my two cents.
Linlin isn't like Doflamingo. Doffy directly produces those strings from his own body. Linlin is manipulating something that already exists. This makes her more like Pica.
Pica can't produce his own rocks to control, he has to control already existing rocks. If you knock out or kill Pica, those rocks don't magically disappear. Half of his golem is still standing in Dressrosa.
Souls just flat out exist in One Piece. You have multiple devil fruit users whose powers revolve around soul interaction and manipulation such as Brook, Moria and Linlin.
Brook interacts with and manipulates his own soul. Moria does the same with shadows, which in One Piece are considered like a piece of soul or soul adjacent thing. Linlin interacts with and manipulates all souls that submit to her.
As mentioned before, Linlin's powers require targeted individuals to submit to her in some fashion either willingly through fealty or forcibly through fear. If you have grande cajones like Jimbei, Linlin can't do smack to your soul.
Compare that to Moria, the bloke whose powers are most similar to Linlin, he doesn't need submission at all. He can simply tear shadows off of his opponents regardless of their defiance.
This submission clause in conjunction with souls simply being an existing substance (for lack of a better term) could be the reason why the homies are still around.
Moria's victims and their shadows always desire their reunion. Linlin's victim's and their soul pieces don't necessarily desire reunion thus the already existing soul substance that Linlin shoved into an inanimate object continues happily with its existence until its destruction regardless of what happens to the original prime soul that it came from.
Tl;dr Homies don't prove Linlin is alive because souls exist in One Piece regardless of Linlin being alive.