It would take (some) attention (and sales) away from the iPhone 16 release.
Past iPhone SE releases always came after the main iPhone release.
iPhone 6s / 6s Plus with A9 SoC announced September 2015
iPhone SE (1st gen) with A9 SoC announced March 2016
iPhone 11 with A13 SoC announced September 2019
iPhone SE (2nd gen) with A13 SoC announced April 2020
iPhone 13 with A15SoC announced September 2021
iPhone SE (3rd gen) with A15 SoC announced March 2022
which means
iPhone 16 announced September 2024
iPhone SE (4th gen) announced March or April 2025?
The question is what SoC will the 4th gen iPhone SE use, an A16, A17, or A18?