I have read that after Wojtyla issued the Code of Canon Law of the Eastern Churches in 1990, those Churches also began to update their sacramental rites in the same way the Roman Church did in the 1960s-1970s. I have also read that they have not changed their rites at all. Unfortunately, I don't know anyone who has actually made an actual study on the issue and none of the sources I have read are truly authoritative. They seem to simply be repeating what they have heard rather than actually reporting their own research.
I have also read that another problem seems to be that in the West, many Eastern Catholic priests are former Conciliar priests who changed rites. An Eastern Catholic priest who was originally ordained in the Conciliar or by a Conciliar bishop is likely not a valid priest anyway. So, unfortunately, even the ordination of Eastern Catholic priests must be investigated.
Many Catholics have resorted to Eastern Catholic priests since the "Changes" in the Roman Rite began to manifest themselves. This still happens today. Are Eastern Catholic priests still true priests? I really don't know. I would love to see someone who has actually researched the issue of the rites of orders of the Eastern Rites report on the issue.
Bottom line is that one can confess one's sins to any valid priest--even a schismatic priest when in danger of death. These are truly dangerous times.