Yes being divorced for only one year seems short. Healing usually takes time unless you had already moved on and had started your healing process while married which is rare. However outsiders don’t have the way of knowing this. Most of the time, it takes a long time to recover from a ling marriage and most don’t want to deal with anyone else’s baggage. Usually people who have been divorced for a short time (and yes one year could be considered as short by most) come with a hefty baggage. So the long answer to your question is that others want to play it safe and they don’t know your divorce journey.
I think for most the question comes down to this: did he move on and is he ready to get into another serious and committed relationship?