Yes, labels are very useful in context. No one is telling you to shut up, but threads here don't exist in a vacuum and if there have been quite a few about how to be a correct feminist seemingly with the aim of encouraging excessive division then you needn't be surprised or offended if your thread is seen in that context.
In terms of the usefulness of labels, I wouldn't think that you'd make your argument that "I'm a normal feminist, not a radical feminist" and that isn't what the responses here have been saying at all.
Personally I understand much of the rad fem position, and certainly prefer it to the broadly lib fem one. I am a number of other things myself - I am pro life, I am Catholic, I am a Doctor Who fan. Each of those labels often leads to all sorts of wrong assumptions about my views, which I then usually have to clarify, so while the labels can be useful shorthand to lead in to a conversation, they have their limits.
Basically, I don't really see why you can't approach things by saying you tend towards rad fem ideas, and when in conversation talk about the significance and importance of motherhood and all that involves, as part of the feminist movement. Tbh, aside from some of the extreme positions that have been mentioned on other threads, I've never seen overtly anti-natal feminism on Mumsnet, which is hardly surprising given the demographic.
But I read those threads that talked about it, and I found it interesting to consider the thinking, while I don't agree with it, and I didn't feel excluded because some feminists have those opinions.
Anyway, I posted as I did because of the afore mentioned context of a number of these threads, and also because I have read threads some time ago where women were very new to feminist thought and were feeling unnecessarily excluded because they didn't fit neatly into expected beliefs. So it wasn't to tell you to shut up, it was actually to reassure you.