“I have costs.” statement is the response for everything, every year. It looks like these type of people come from the same template, read the same book about starting the business.

Still, you were lucky that your colleagues are aware of alternatives and will use it (I hope). I wonder though if people will migrate because of you. Its tough to encourage others to communicate Signal while majority use Messenger or Whatsapp. Their reasoning for that is the most friends and family member are on mainstream solutions.

Signal is an interim solution imo for most people, which I also recommend. Not too extreme, not to “geeky”, which introduces them to alternative app world.