Oh, Apple. WHAT HAVE YOU DONE???? As with most devout Mac users, I defend the higher prices of your tech and the relentless updates and releases on the regular with my iPhone firmly in my pocket. I've been a lifelong user of your products across the board.
My father started one of the first post-secondary Mac "desktop publishing" programs with a Mac lab in Canada back in the mid-1980s so we had one of the first Macs at home with a 8 MHz 68000 processor, 128k of RAM, a 400k disk drive and a 9" screen, long before computers were found in pretty much every household as they are now. And I've had almost every iteration of Mac computer since then, leading me to my current MacBook Pro.
There have been a few gaffs along the way but for the most part I'm confident in my loyalty to your brand, one of the only brands I'm loyal to. But this is ridiculous. It's such a small thing but has such a huge impact on the end users of the native Photos software. Photos is one of the best pieces of native software that you offer, in my opinion. And the basic yet just-detailed-enough editing freedom it allows is a huge part of that. The three functionalities of the editing that I use on almost every photo I share, whether it be with family or for work purposes, is resizing, recolouring, and use of Healing Brush Tool. Remove an errant hair or a blemish on a face. Disappear a bird flying out of an ear or a plane drawing the viewer's eye away from the subject. Removing an unintentional photobomber or an unfortunately placed light fixture from a company group shot at the staff Christmas party. Discreet edits that require a fine tuned hand, that make a large impact and are quick and easy to do in Photos with the right tool.
But then comes along Sequoia 15.3.1 and the Clean Up Tool. What is this ungodly bull in a china shop?!? Aside from sizing the "brush", it comes with no ability to finesse anything and the AI behind it is clearly drunk off its rocker. There is no control, no ability to remove a small pice of dust from a scan or a pimple from a forehead that doesn't look blotchy and pixelated and wrong. This is not a replacement tool by any stretch of the imagination, even if it were working well. This is perhaps its own separate tool for broader stroke editing like removing full backgrounds or doing rough removals/replacements before going in with something like the Healing Brush Tool to finish the job properly. But this is absolutely not a replacement. I'm not sure how this got past QA checkers at Apple but someone was asleep at the wheel, or someone badly underestimated how important the Healing Brush Tool is to Apple's users.
Please bring back the Healing Brush Tool as soon as possible. It is sorely missed!