As of the beginning of this week, according to 24/7 Edwards was tied for the 14th ranked QB in the portal by rating (.8700). Of the 13 ranked ahead of him, five had already committed. Of the remaining eight, only three had thrown more than 100 passes in FBS games - Mendoza (Cal), Murphy (Duke), and Salter (Liberty). Mateer had not officially entered the portal yet (and it's likely he's following his OC to Oklahoma).
If you wanted an experienced starter, your options at the time were Mendoza, Murphy, Salter, and Edwards. If you wanted someone with P4 experience, scratch Salter. According to sources, UW reached out to Mendoza to visit, but he declined.
Also, Maryland's OL was ranked in the bottom 5 in all of FBS. The most popular player on every team is the backup QB.