> you can't replace the battery yourself
Not true at all. I have a close friend (not an electronics or programming nerd in any way) which has replaced the battery (and a screen) on multiple iPhones with nothing more than iFixit instructions.
> you can't safely expand their life
Again, not true. See above.
> with so many untaped opportunities.
Which is obvious I agree with, since I said they absolutely should be better at repairability. But consider the dismissive tone of the original comment, which is justified with false information.
To give you an exaggerated example, let’s say someone is telling you about all the awful practices Nestlé engages in. All of them are true, but then they end with “and their CEO is literally Hitler, who survived and changed his face due to an agreement with the Beelzebub, and is going to control humanity through chocolate”. At that point most people would dismiss them as a nut job and ignore the other true valid points as fabrications too.
Which is why we should criticise, yes, but based on truth, not lies and rage bait.
They didn't say "nobody can replace the battery themselves", and "you" here was probably intended to mean "a normal consumer". Relative to items with replaceable batteries (a TV remote control, a camera, a pre-iPhone mobile phone), the batteries are extremely hard to replace.
The batteries are also not safe to replace, relative to items with replaceable batteries. There is a very low chance of me accidentally damaging my TV remote control while replacing the batteries.
None of the information you're responding to is false, and it's perhaps worth asking yourself why you're here defending Apple.
There's an easier argument that is simply "But Samsung!".