I can understand the OOC name and shame, but I'd hate it if Ché loses all IC credibility just because there's OOC knowledge that his player has a spy/thief alt. To me, it feels like a char not getting into TS-F because the player also plays an mission alt that does incursions, or a Matari char not getting into TLF because the player also has an Amarr Holder char. Or Ché not walking into somewhere because I see, OOC, that Ava is there waiting to punch Ché in the nards.
I would prefer it if the RP community people trusted I can keep my characters seperated until proven otherwise.
Here's the thing, though: You have a spy alt. That's an easy thing to do, right? But if you look at your spy alt ICly, why are they spying for your main? Is there a rationale for it? Have you worked out a story behind why this happened? I know that sounds ridiculous, but imagine your spy alt was actually a different player's character: You'd have to work out ICly with them why they're spying. At the very least, they'd need a compelling reason why they're going through all this trouble for Ché: Money? Blackmail? Something else?
If you just create a "spy alt" and leave it like that, you're dropping the IC game and stepping squarely into OOC-ville. Likewise, if a player creates an alt and uses it to steal someone's assets, transferring them to a main before deleting the alt, it's all OOC. Why would the thief do that? They've gotten away with a few billion isk in assets. Why would they give them to someone else and then retire?
To me, a player who's creating characters to perpetrate corp thefts and wishing to keep them IC would probably have to be satisfied with doing the theft and then biomassing the character along with all of the loot. That character was successful in their heist, after all. They're retiring to spend their hard-earned loot!
For a spy alt it's a bit harder, because there's an implicit relationship between the alt and the main. I've never seen someone playing a spy alt in a way that's felt like it's anything other than an OOC relationship, but I suppose it could be done.
That's why I, at least, am fine with the alt-name-and-shame game.