While it might make sense to produce a 64 bit only version for Mac, whose Os since Catalina has only accepted 64bit apps, why wouldn't you produce 32 bit versions for those OSes that are able to use them?
Hold on a tick . . .
My younger son has a MacBook that he is running Mac OS Mojave on because upgrading it to Catalina will 'fudge'
an awful lot of expensive DJ software he has invested in.
He reliably informs me that a very large number of people he knows run relatively "cranky, old" Macintoshes that
either are 32 bit only or work better with 32 bit than 64 bit software.
From a purely selfish point of view (and this should NOT really figure in any of LiveCode's global calculations), I could
replace my cranky old PCs with a lovely bunch of 2006 iMacs running Mac OS 10.7 ('Lion') which have socking great 17 inch screens
(far better than the 1024 x 768 flat things I picked up for $10 each about 7 years ago), and run ALL my EFL programs
(authored in LiveCode). The ONLY thing that is holding me back is that I should like to use the "latest and greatest"
incarnation of LiveCode for my annual teaching adventure.
"Our Man in Havana" will, inevitably trot out the usual stuff about support, plus have a dig at me for mentioning this again, again and again.
What would be interesting is not what "Our Man in Havana" says (mainly as we have heard it before), but whether there is interest
in 32 bit versions of LiveCode for Macintosh apart from mine.
I am prepared to believe that there are quite a few older Macintoshes chuntering away in schools that, were there up to date
32 bit versions of LiveCode, could be used for teaching purposes.