He can't because it's not true.

This is a EU regulation and it's a good one.

It perpetuates the myth of recycling and puts the onus on the consumer and state to recycle instead of the corporations to stop using containers that pollute the environment, will be in the environment for decades without breaking down, and is likely causing yet unknown harm in our bodies since plastic is inside all of us now.

The first of the "3 R's" is reduce but instead of that being the focus because it hurts their bottom line, they prop up recycling and sell the lie that we can keep living as is if we just recycle more and get better at recycling.

No idea why they'd want those tethered caps. My speculation (and that's 100% unfounded, so take it as you will) is that they are lobbying for something simple and cheap (tethered caps, plastic straws, etc), to blind people from the real environmental issues that are far more costly to tackle. Kind of like the plastic recycle logo, which is a total scam, but makes people feel good enough to not further question the big corps' recycling practices.

My guess - somebody at coca-cola figured out the cap attachment system and they patented it, but had no real plan. Then someone had the idea to lobby the EU to make it a requirement. They can sell it because it will reduce litter to some extent and improve the beverage industry's reputation. But more importantly, coca-cola not already has their manufacturing systems in place to produce these bottle caps. Other bottle manufacturers must now play catch up, constraining the supply of bottles available for EU beverage sales. Now their competitors are scrambling to update their own bottles, which will increase their costs and might delay shipments, lending coca-cola market share. And smaller competitors who outsource their bottling might be forced out of the market entirely if the company they contract with to manufacture their bottles can't or won't comply with this regulation.