But then some mother's say they appreciate hearing that because then they think they may be able to BF with their next baby.

I note that a few people have commented about what others implied when they made comments to them. I think implications are something you have to own yourself. If you hear a comment like the one above and think the person is implying you gave up too easily then maybe that's you projecting your own feelings on the comment. It's very possible the intended implication wasn't what you believe it to be.
Yep, true.
I love what you said about 'implications are something you have to own yourself'. If people can't do that then there's no point in saying anything, because you can make something out of anything.
Sometimes even when it's asked for I find it hard to offer encouragement or advice that won't make someone feel like they 'should' do anything.

I just think it's worth keeping in mind a bit of tact never goes astray... so what if taking offence means you're doubting your choices? what's the difference?

I think too it depends on how the advice is offered. There are many ways to frame it, and just saying 'oh well you can try harder next time' or whatever isn't likely to be helpful.

That's an interesting example because it reflects the opposite frame of mind to how I feel about unnecessary FFing AND unnecessarians. I don't think the mother should have done some little thing differently. I think she's a reflection of a system gone wrong and she needed better support.
Absolutely, totally agree.
In most cases, just about every situation I can think of, the failing is with the system / society and reflects a lack of knowledge & support. All of my feeding experiences with my children would have been different, ever single one, if I had had more knowledge & more support. Same with most women I know.