Adnan, I think you are right. If only the Zoom company would let us know what the hash function is… I guess they erroneously believe that keeping the hash function secret increases security. They should ask a security expert and learn that it doesn’t. That’s not how hashing is used to make passwords secure!
The Zoom company has funny ideas about security. They have convinced some hosts to disable private chat, and require that private messages be sent via the host, manually! They have convinced some hosts that participants should wait until the host lets them into the room, one by one! Both pieces of advice interfere with ease of use for questionable benefit.
Companies that are open and request feedback and suggestions, produce far more useful products. Zoom has great technical innards, but a clumsy, awkward user interface that can fail for some use cases. And they clearly simply don’t care. Unfortunately, their newfound popularity due to the pandemic has only reinforced their unwillingness to improve their Meeting product.