Nah, I don't think that is the case, however as a submissive I am not afraid of being "beaten up"
A long time ago, I too had placed a personal ad in another forum when I was still very green. I really didn't know how D/s actually worked.
Actually I wanted to find a mentor to help me learn. I also said I had a b/f already and wanted to be able to share with him.
I had a Dominant who wanted to meet and have me naked and kneeling our very first meeting. One who wanted to meet me in a hotel and tie me up, sending me endless emails as to what we would do together. He was also using his wife's email, and of course she found out and threatened me. Not that I was going to ever meet him, but still, not a good thing to have happen.
I was also told to f**k off, get lost and lose the boyfriend. I wasn't a submissive and no one would help me.
I ended up using my own discretion, and learned by reading that all of those responses were plain bull.
I was smart enough to know who the trolls were and who was genuinely interested in helping me.
If I made a personal ad now, I would welcome a Dominant who was mean and demanding, that's what I like. I don't like the cozy, comforting Doms, they aren't compatible with me.
Now that I know what I want, any response to a personal ad would be taken with a grain of salt. I know which ones are in fact genuine and which ones are not.
I'm rambling, but my point is, regardless of what responses a submissive garners, they should take some responsibility to understand who they are meeeting and talking to.
Yes there are many threads around that do help, it is up to the individual to seek out information when they are new.