I’m not sure who the “we” is in your statement, “we do know with certainty that IVF is immoral”. As evidenced by the entire rest of the thread, this opinion is hotly contested. If you believe IVF is morally wrong, please at least explain why. As it stands, you’re simply condemning families and researchers as evil and holding future research to an arbitrarily high, nebulous ethical bar with no explanation.
"We know with certainty that IVF is gravely immoral." is essentially "I know I'm 100% right and everyone who disagrees is wrong."
Seriously, why even bother engaging with people like that who have made it exceedingly clear they are uninterested in listening. In the words of the always incisive Barney Frank, "I'd rather have a debate with a dining room table."