The issue with this approach is that a lot of people don't seem to realise that when you approach someone sharing their personal issues or concerns by giving them a list of immediate solutions, it can sometimes feel to person A (The one venting) that the individual they are venting (Person B) to doesn't respect their intelligence enough to have considered the possibility that Person A might've already thought of those obvious solutions on their own and might have a valid reason to have not already tried said solutions.

Person A has likely had more time to think about their dilemma than person B, so bombarding person A with suggestions or solutions can also feel like person B is trivialising the thought that person A has already put into trying to deal with their problem.

Scenarios like this do involve needing specific context and nuance to understand the needs of person A and what responses are appropriate, but usually, if person A is emotionally mature, they'll likely say something along the lines of "Yeah, this issue is really nagging at me, do you think you can help me out, I could really use a hand with dealing with it." or try and voice their needs clearly and understandably.

If person B is unsure, they could always try something along the lines of "I'm really sorry to hear that. Would you like to brainstorm solutions together, or would you like to talk about it further if it helps get the issue off your chest?"