It depends on the context. If that’s the only purpose of the post, then it may be spammy. If the post is a genuine attempt to start or facilitate conversation, it’s probably fine. Also depends on the history of the individual.
The kind of spamminess we want to prevent is people who just want to get their stuff in front of eyeballs on Cake to drive clicks elsewhere. Most users aren’t interested in seeing that kind of stuff in their feed.
As long as you’re making a good faith effort to have good conversations, you don’t need to worry. 🙂