Zoom isn't being "targeted". They have repeatedly been in the news for gross security failures and personal privacy abuses. Other video services have not because they have not had this series of failures and abuses. That is not "targeting" zoom, that is reality being appropriately reported that zoom has bad and suspicious security practices and probably should be avoided.
Because Zoom in particular not only has numerous demonstrated security vulnerabilities, many of which are apparently intentional features, but has also shown a recklessly cavalier attitude to security generally. Surely it makes more sense to use and promote solutions from companies with better track records on security and privacy, which at this point seems to be pretty much anybody else.