In short, on Ethereum, staking rewards now seem stable (3-4% APR), because after Dencun/Pectra, the bulk of income comes from commissions + MEV, not from emissions - and with an active network, these variable components compensate well for the drop in base pay, plus protocols like Lido/Rocket Pool/ether.fi uses smoothing to equalize payouts.
The picture is similar in
JitoSOL: APY has been holding steady at 6-8% for a long time, despite changes in the network, precisely due to MEV awards from Jito Tip Distribution, which add extra yield and smooth out fluctuations.
According to validators: the number of keys may fall, and the stake may grow — large pools consolidate thousands of 32-ETH validators into fewer nodes from 2048 ETH after Pectra, this increases efficiency without increasing the number of active validators.