Web3 refers to a change in how we use the internet. A internet that is decentralized and works over a blockchain, it's token-based and permission-less and have no restriction and blockage by single authority.
And any project calling them web3 project were a hot cake some months ago but there are no real consensus of what web3 actually is. The crypto starting from bitcoin is already a step towards it and It's an internet euphoria and might not be ever fully implementable.
Almost all of the old and new projects claim themselves working for the implementation of web3. The popular ones that are actually focused on web3 are projects like ICP.
I think the problem is that when you use a buzzword like web3, then it would not really make sense when it is not. I have seen plenty of projects that were not web3 at all, and yet still used that word to get more investors, it is just way to get attention. Same goes with meme projects as well, pepe this, doge that, whatever animal you can think of with "inu" at the end of it. It's just a way to use buzzwords to get the attention of the people.
I have seen ShibaAI, literally that is the name, just put two buzzwords together, it was labelled "AI version of SHIBA", and people put thousands of dollars into it as investment even before release at launch period. So buzzwords do work if you know how to do marketing, but they are terrible investments.
This happens very frequently when it comes to assets that have something to do with technology, since at the beginning only the experts understand the terminology, but people begin to use it wrongly and scammers take advantage of it as the term no longer means what it used to mean, and it just becomes a term used to try to make it seem as if the project is involved on the latest trend.
However investing in any asset just for that reason alone is wrong, and if the OP does not adjust their mentality they are bound to invest in a scam, as web3, NFTs, meme coins and AI coins have been the rage for quite some time already and scammers are taking advantage of it.