This is an issue that is totally perspective. I have a partner. I care deeply about said partner and want to keep them. They are willing to try new things and play with me, as long as I bring the ideas and am very clear (done to past baggage I'm greatfull)
My issue is, where is the line? The blurry little line that if crossed could compromise my current relationship. Just chatting about toys and ideas is good, but at what point is talking outing a scene to much? When I get emotional you invested? When the person I'm talking to is?
For me any sort of online Ds relationship would be to far because I am in a monogamous relationship which means I'm dedicating all of my time and emotional energy to it. So even if it's not sexual to the other person it would feel inappropriate to me. So it is definitely a material if perspective, the other person may have little attachment.
As it is, I've had multiple offers of people willing to help me learn, online or in person, with the sedithay it will help me with my SO, but I can't help the nagging feeling that some of them just want to get some free play in.
This might be just a me issue and my past baggage interrupting. It may be a real and legitimate concern. It is likely a bit of both.