No. It’s not Open source at all!

From Open source definition: “The license must not restrict anyone from making use of the program in a specific field of endeavor. For example, it may not restrict the program from being used in a business, or from being used for genetic research.”

Source: https://opensource.org/osd

I really wish was a Free Software and not a proprietary one!

Discord is a mess and very hard to use. Element in the other hand is designed logical and easier to learn.