Milord Absolutely no! No bdsm for minors! Bdsm is alternative sexuality, must be explored when you have the emotional maturity to understand it. Be aware that we are talking about power dynamics.
I avoid doing things with young people, normally I avoid anyone younger than 24, but it’s a personal choose. No serious bdsmer will ever do this.
Alternative or no is a conformist statement, but the thing about the power dynamics is definitely something to keep in mind. I would argue that it is none of our business what teens do among each other (aside from parents keeping an eye out for any signs of physical harm or emotional distress of course, but that is not specific to BDSM), but adults should not be enabling minors to engage in BDSM play, nor engage with them even in cases where age-of-consent law would normally allow such interactions. Because the power dynamics just are not there.
For example, German law technically allows for 14-year-olds to engage sexually with people over 21, provided that the older person "does not take advantage of the minor's limited ability to sexually self-determine". I would argue that the power exchange nature of BDSM definitely makes it a lot more difficult to avoid the limits of a teenager's sexual autonomy and maturity, so even ignoring intentional abuse/grooming for now, domming a person who is generally assumed to be of limited maturity to consent is a can of worms I would encourage any adult to stay away from. And subbing to one? Have you seen teenagers? You really want to put yourself at their mercy?