Given #mozilla now-ambiguous statements about privacy, what do we think about using #firefox Relay for email masking/alias?

Relay is a part of my ongoing effort to tighten up email security as I de-Google my online life. I like that Relay is free since I'm trying a bunch of new stuff and may not like it.
Otherwise my only loyalty to it is that I've already invested the time to set up the masks and forwarding, NBD.