You can't parse [X]HTML with regex. Because HTML can't be parsed by regex. Regex is not a tool that can be used to correctly parse HTML. As I have answered in HTML-and-regex questions here so many times before, the use of regex will not allow you to consume HTML. Regular expressions are a tool that is insufficiently sophisticated to understand the constructs employed by HTML.
If by "parse" you mean "match", the answer is yes because you can express a context-free language in PCRE.
If you mean "parse" then it's probably annoying, as all parser generators are, because they're bad at error messages when something has invalid syntax.
