One of the things we're well aware of is the huge opportunity/need for better gateways. What you're seeing is actually the gateway failing (not IPFS) so _technically_ ipfs is doing fine. NOT THAT THAT MATTERS IF YOU'RE JUST TRYING TO LOAD A WEB PAGE - WE KNOW! WE PROMISE! :)
Lots of folks are working on retrievability even as we speak (https://retrieval.market/). Stay tuned!
BTW, if you ever want your content directly, you can go here - https://ipfs.io/ipfs/<CID>. Brave also offers IPFS native integration not via gateways. Again, we are well aware this isn't enough! Coming soon...
Disclosure: I am co-director of Research Development at Protocol Labs.