Sorry, I have seen that statement - but that is the vague one, because no details in contrast to the IOSS/VAT situation. Your new quotes are also mainly about VAT and the article is outdated.

See here:
"The IOSS was introduced as an optional scheme for facilitating marketplaces in July 2021 and is proposed to become mandatory from Jan. 1, 2025"

That was clearly written before Jan 1 2025. That is not reality, IOSS is not yet mandatory.

Amazon, eBay and AliExpress are examples of platforms. It is mandatory for such large businesses, but not for small businesses like Model Monkey, who state that they are not using it ("After several attempts, we ultimately abandoned trying."). The cheapest way for Model Monkey to use IOSS would be to sell on platforms like eBay.

One interesting point: all articles mentioning that change in regard of tariffs are all not on typical news websites, but some strange websites. - or are very old articles describing possible changes.