I was kidding. If anything she's closer to Skye from Paladins than the SpyHonestly Sombra's stealth is done pretty well, and I don't think there'll be another stealth character for a long time, if at all.
Plus, I think that statement in regards to stealth was that it's hard to balance without making it also frustrating to play against (e.g. onehit kills ala Backstab).
But Sombra is absolutely nothing like the TF2 Spy. Seriously, I don't get why people look at Sombra having stealth and go "yup, exactly like the Spy", when they are about as different as stealth characters can be.
We need our version of the heavy, unless you think Zarya is the equivalent of that
Also, the Sombra is not that similar to the Spy
A closer heavy equivalent would be Bastion.