The current licensing should not prevent releasing commercial products in any way.
The main intention of the license is - “All modified files containing MPL’d code must be disclosed under the MPL”. If you fork Armory into your own engine, you absolutely can, the only restriction is to keep it open source.
Games / animations / … created in Armory do not have to be open source and can also be used commercially. Would not want to make any restrictions on this, it’s up to the creator to do with his work however he pleases. 