Not really everything. That link doesn't say anything about Uniden acquiring Regency's scanner line, which is the current point of discussion.
The September 1988 issue of Monitoring Times reported the acquisition and featured an interview between Bob Grove of MT and Paul Davis, National Sales Manager for Uniden, on page 33. It starts out: "Uniden Corporation of America, manufacturer of Bearcat scanners, recently acquired the assets of Regency Electronics’s Consumer Electronics Division. To allay the fears of many scanner owners, we are pleased to present this interview between Bob Grove for Monitoring Times and Paul Davis, National Sales Manager for Uniden." You can read the entire interview (in text format) at
https://archive.org/stream/MonitoringTimesSeptember1988/09September1988_djvu.txt, in which they discuss Uniden's plans for the Regency scanner line.
Also, page 100 of the October 1999 issue of Monitoring Times contains the following "Business News" item:
"Grove Enterprises has been told by company representatives that RELM Communications has discontinued their MS200 and HS200 scanners and is getting out of the scanner business for a second time. RELM - with its roots going back to Regency Electronics - sold its scanner line to Uniden a dozen years ago, but reentered the market in 1997. RELM still manufactures two-way land mobile radios."
So Regency changed their name to RELM and sold off their consumer electronics line (including the Regency scanners) to Uniden. They later manufactured a couple of their own scanners under the RELM name, but eventually discontinued those.