I think the article is misleading. It has never been permissible for a deacon or priest to get married, ever. What had been allowed in the past was for a married man to be ordained a priest or deacon.
What the article, I think, means to say is...Francis wants the Pan Amazon synod to consider ordaining married men for the priest crisis there. This would allegedly be on an “experimental” basis; i.e., will try it here and ram it down everyone else’s throats later.
In my opinion, that would be an unwise concession to the modern age. Just Francis the Wrecking Ball continuing to plow away.