When a CEO calls people "losers" for caring about security, and when the CEO considers it a failure that they don't have hockey stick growth, to me that's absolutely a reason to consider changing for most people using Proton. If someone doesn't care about employees raising security concerns, or a company chasing profits at all cost, then why are they using Proton in the first place?
If all that is true it is a concern. I'm not going to make any changes until I see some validation. Validation from other media, or seeing a decline in quality of product.