What was the average raise then
"Mean raise for SI" is also not what the original post said. It just said "raises for most employees was between 0% and 1%". We can't exclude the higher performers.
Zero people on my team had raises below 1% (one was close). Nearly my entire team, including me, received SI for 2022. The merit lines make it clear what %MRP you'd need to be at to get a 1% raise and it is well above the norm.