The tweet mentions the tool Knoxss, which is designed for WAF bypass, but after trying it for 3 months on fresh and old bug bounty programs, the user couldn't find any successful bypass. The user states that the tool currently cannot bypass any WAF and is requesting an update from the vendor. The user also states they will not renew their subscription due to lack of effectiveness. This suggests the tool struggles against modern WAFs and needs improvement to handle current security measures.
For more details, check out the original tweet here: https://twitter.com/AhmedMa07846126/status/2027582464969814218