Consumer SSDs are cheaper per terabyte than these microSD cards, and there are consumer-oriented 4 TB SSDs, like Samsung 860 QVO.
If you have bulk storage needs, you should be using a mix of SSD and spinning disk.
I haven't completely filled my laptop's 500 GB HDD. I could if I wanted to, but I trim it down before that happens. If I had a 2 TB SSD, I would make sure to keep most video off of it. I could fill it with games or applications but nah.
The $100 1 TB SSD is a thing now. Maybe in a year that will decline to $70, with 2 TB at $150.