Basically they're not compliant for MURS, GMRS, nor FRS because the company didn't go through the certification procedure to have the radio model(s) certified for use on the Part-95 frequencies. It may be because they didn't meet the requirements (e.g. only working on the MURS frequencies as required for MURS certification, or perhaps having a non-removable antenna as required for FRS certification) or perhaps they just didn't feel it didn't justify the cost to perform the required tests and submit the necessary paperwork for Part-95 certification.
They do appear to have two models that are Part-90 certified (the UV-3R and UV-5R models) as indicated a search on the FCC OET (equipment certification) database (
OET -- FCC ID Search - Baofeng's "Grantee Code" is "ZP5"), but none that are Part-95 certified. As others have said, use on the Ham bands (Part-97) does not require a radio to be certified so they're legal there.
Do I really care if you operate a non-certified radio? No, not really.
Do I care if you have to pay a large fine to the FCC for using a non-certified radio? No, not really.
Do I feel you should be informed that your radio isn't properly certified? Yes, so you can make an informed decision on violating the FCC certification rules and putting yourself at risk for a large fine.