No!
I'm only halfway through and though this may be the best thing he has done in the DCEU, it's still largely pretty damn terrible - if not without its more enjoyable moments. The change of direction introduced in WW was much needed and this self-indulgent, self-serious, boring, bombastic, badly assembled, ugly looking trainwreck is only further proof of that. Snyder is just not a good filmmaker, as far as I'm concerned, and I genuinely don't see the appeal of what he brings to the table.
Edit: Just realized I didn't answer about it being "canon" or not. Obviously, I don't know yet if there are major differences between the two cuts of the film in terms of the ultimate plot but, honestly, the canon of the DCEU never really got off the ground so unless they reboot the whole thing around Gadot's Wonder Woman, they should just allow everything to stand alone. They tried to be the MCU without putting in their due diligence and, unsurprisingly, they haven't come within a million miles of matching its success.