Good question: Grain ears too early, is that bad?

Hello, I can see in many winter rye fields how the ears are already emerging and are already out. With winter barley, you can only see the awns. I was wondering if there are any problems associated with this, since it doesn't actually start until the end of May or mid-May. What consequences could this have? Some people have had to mulch their rapeseed fields, for example, due to frost damage.

PS!!! Unfortunately I haven't been able to see any wheat yet, or rather I haven't seen a field of it, so I can't say what the ear formation looks like, just like with triticale.