If the recruiters are telling you that you will upgrade at 1000 hours that is a blatant lie. As is the 6 year flow.
You're a pilot so I will assume you can do simple math:

Approximately 600 FO's on property. So far this year 4 upgrades, or 1 per month. Many FO's with over 1000 hrs that have not upgraded.

Approximately 1200 total pilots. 5 per month to flow, or 60 per year. Double it for other attrition. 120 pilots gone per year equals 10 years to flow.

If the recruiters are telling you any different then that is dishonest and unprofessional.

There is no growth. Aircraft deliveries being deferred.
There is no opportunity. Except to work for the lowest pay under the worst contract.
I could go on and on...