I love my macs and want to use them all the time.
However a PC is far far better for rendering in my opinion.
I have spent a fortune on all the Macs - IMac, IMac Pro, Macbookpro. [all maxed out at purchased], and not one holds a candle to my custom built PC [that was cheaper.....]
I am hopeful M chips may swing this argument, but GPU rendering with an RTX GPU is awesome [I only have a 2080 Super]. When I stick the 3090 in my computer it will be crazy.
Macs are great for certain tasks, and I use them for what they are good for. GPU rendering is not one of them.
But I will leave it here - if you are just tinkering then yes a mac is great. If you run a business like me and time is money, then PC all the way for visuals.