I just checked and Chrome still shows the ability to disable it in Flags, and when I right click on an image the menu gives the option for an image search not a Google Lens search. And when I look back at the Brave Flags there’s still the option to disable Google Lens. Disabling Google Lens just changes the option in the menu to Search Using Brave Lens instead. There’s no option for disabling Brave Lens.
Not sure what you or the others are seeing, but it’s definitely a Brave issue for me and not one with Chrome. Still more than happy I switched over considering all the Chrome issues I’ve had lately, and this is one annoying as hell problem for something I do every day. But it’s a small one compare to how much smoother it runs and the better options it has. Hopefully this gets resolved soon though.