What I hope those people are proposing does not effect inflation. They are talking about the relation between POS reward and DPOR reward. The DPOR reward is set at 48000 per day divided among every single miner. This means that as GRC gains more miners, each miners payout decreases. POS, on the other hand rewards 1.5%/year. That never changes. This means that whales/stakers are consistently getting 1.5% no matter their number while the reward for miners is continually decreasing. There are a few solutions floating around that somewhat solve this issue, but I have not yet seen something that gets to the root disparity of reward.
If these people are in fact just proposing just minting more coins to give to miners, then yes, that's inflationary and counter-productive.
It's hard to talk about without a link or a quote = )