I think it's very useful if you frame it as a learning opportunity.
We could all speak in accord on something incredibly obvious, but would we learn anything new from that?
If people are prepared to engaged in a frank but respectful, exchange of perspsectives, check their egos out at the door, and engage in questioning and counter-questioning then I think that's fantastic. Looking at the Sutta Pitaka, it seems as if this is very much how it was done "back in the day".
No need to get heated... you don't want to vomit blood!
"Do not force others, including children, by any means whatsoever, to adopt your views, whether by authority, threat, money, propaganda, or even education." - Ven. Thich Nhat Hanh
"The uprooting of identity is seen by the noble ones as pleasurable; but this contradicts what the whole world sees." (Snp 3.12)
"To argue with a person who has renounced the use of reason is like administering medicine to the dead" - Thomas Paine