Must I school you every time. The 117s were old and expensive to run, nearing the end of their useful life. There were better stealth options available.
Also the full retirement happened in 2008 a full 9 years after the shootdown.
The planes could still fly and bomb targets, only their stealth factor was not guaranteed and there were more cost effective ways to bomb targets. As per the final Congress order, they are in "mothballed" status till 2034.
Also interesting to note, Lixun's compatriots were over the wreckage like ants on sugar cube. A lot of what they know about stealth originated there. So there is a good chance, similar tactics will detect chinese stealth planes which can be then intercepted.