I have concerns about the inclusion of zoom in ::gentoo. For me it's more like a malware.
From the hacker news feed you'll find out that:

[1] zero day vulnerability found
[2] passwords are truncated to 32 bit
[3] previously sent data to facebook
[4] end to end traffic isn't encrypted
[5] signed binary run unsigned script

1 https://techcrunch.com/2020/04/01/zoom-doom/?guccounter=1
2 https://news.ycombinator.com/item?id=22749706
3 https://www.vice.com/en_us/article/z3b745/zoom-removes-code-that-sends-data-to-facebook
4 https://theintercept.com/2020/03/31/zoom-meeting-encryption/
5 https://news.ycombinator.com/item?id=22746764