because in q1 (individual) the inflation-adjusted spending is your real requirement - this year you spend 300k and next year it’s 300*(1.025) - you simply MUST add this amount to liquidity needs because your liquidity = cash expense, an actual outfolw.
in q6 (foundation) on the other hand it is the university, not the foundation itself (who manages the portfolio) who is affected by inflation. So the foundation should grow its portfolio (return requirement) by 6% plus inflation plus fees. The return requirement already assumes there is a 3.5 inflation. If all is ok and you make this money each year then naturally your foundation MV grows each year by a % which already includes that 3.5% inflation - hence your 6% spending already includes university inflation.
does it make sense?