Well, that final sentence kind of proves you are not at all able to see the point some are making.
For as long as I've been a member,
AY+ was exactly that program. With only minor flexibility in dates we were able to redeem, not only our own voucher upgrades but also family upgrades. All the time. To all the desired destinations.
"
availability was never great" Pft. Talk is cheap. Give us some examples during the period 2010 to say 2019 where availability for upgrades was poor. No sweeping statements, give us actual examples of when
you went into the upgrade availability search and it was zeroed out for several days/weeks/months in a row.
Let's look at the popular claim "Singapore is always difficult". Well, here are the
real numbers, examplified with number of seats
Finnair officially published as award seats on AY81 as a function of days before departure. Data is from Q1-2016.
Oops, looks like you needed zero flexibility to get an upgrade, as they in general published 5-8 upgrade seats
every day. Similar patterns applied for other periods and other destinations. The standard number of seats varied by destination (4 seats were very common) but it was never zero. Sometimes there was blackout dates and/or weekdays, but at T-330 there was not a single destination in the longhaul network that had a full week zeroed out.
And oops, it looks like you didn't have to trawl the system 11 months in advance either to get lucky - seats were available all the way up until a few days before departure. Again, this is published availabilty for upgrades, meaning they were processed immediately upon request. No waitlist success-rate BS. Seats available = upgrade 100% cleared.
So yes, we prefer "guaranteed upgrade over six 50% ones," because that is figuratively how the upgrades in AY+ used to work.
So just stop trying to belittle others who can actually compare the program of the previous decade to the current one, where awards and upgrades share the same zeroed out bucket.