Another great change with the high ISO image quality problem is the big push in image processing software. Adobe has added noise reduction software to their very popular Lightroom and Photoshop software. Another digital imaging processing software company called Topaz Labs has a noise reduction piece of software that is fantastic at removing noise from high ISO images. I use this software all the time and with it's AI processing, all but removes any noise from the processed images.
https://www.topazlabs.com › denoise-ai
I don't really worry about my ISO settings like I used to and I know I can most always produce clean high dynamic range images no matter what ISO they were shot at. I would never have thought about shooting at high ISO just a few short years ago, but no problem now! I suggest you try bumping up your ISO when it makes sense in your lower light conditions and see what Technology has done for us!