Thanks.

I mean there's plenty of reasons to be single at 35 that aren't necessarily a knock against you as a potential partner. Long term partner cheated on you, long term partner died, long term partner grew apart, active duty in the military for 18 years, maybe the person threw themselves into work and was too focused on work to date or maybe they were caring for a declining family member and too busy to date, or maybe they were going through shit and they're finally ready to date again after a lot of time healing and climbing out. You get the picture

Not necessarily. If she was an anxious attached style she'd be more likely to fall for avoidant men. She could either:

1. Now recognize the red flags of avoidants and not subject herself to that.
2. Be unaware of the red flags of avoidants and keep making the same mistake
3. Recently left a long term relationship as an secure individual and discover how many avoidants really exist.

Of course you are right, she could be avoidant to, in which case hopefully she'll learn sooner rather than later that fearing intimacy and vulnerability is detrimental, and that healthy codependency is actually a thing. But it's not easy for them to do so.

I don't like to think that everyone is incapable of finding someone, people just need to figure out why. Pointing out "single for a reason" seems counterproductive and a bit disrespectful.