And...? Actually, since you're a rather new person, I'll give you benefit of the doubt here and show you this oldie.
Bomb for invulnerability.
I enjoyed that replay.
Getting back to the point... for people who aren't very good, like me, dying 6 times in a 1cc run is not bad,
and often happens in the other games with 6 or more extends as well.
As for the green UFOs... yes obviously bomb for invulnerability and you get your bomb back anyways.
That doesn't give much extra resource for use against bosses though.
Yes you did have resources to bomb Kogasa and Ichirin,
but you captured a bunch of spells in Murasa, Shou, and Byakuren (LFO!), where I would've died easily.
Just because you can avoid all the bullets and bomb stages while getting a bajllion green ufos
doesn't mean other people won't clip death a few times accidentally and think the game is hard.
Difference in skill != game is really not that hard