What is Reddit's opinion of LUCID Mattress Elevator Base - Affordable Adjustable Base Alternative - 7-Inch Lift?

From 3.5 billion Reddit comments

Elevated bed. 7 inches. I recommend buying a wedge from Amazon and sticking it under your mattress. It was life changing for me. LUCID Mattress Elevator Base - Affordable Adjustable Base Alternative - 7-Inch Lift - Naturally Reduces Acid Reflux https://www.amazon.com/dp/B08FRP3HTB/ref=cm_sw_r_cp_apan_glt_i_6BHMGVZR28FZ11CJJN62?_encoding=UTF8&psc=1

No, it’s a gradual increase from foot of bed to head of bed. mattress elevator so it puts your bed on a slant rather than an abrupt incline. I place mine under mattress. What if you get a board and have the hardware store cut just high enough to block your mattress from sliding and still allow you to hang your feet?

https://www.amazon.com/dp/B08FRP3HTB/ref=cm_sw_r_cp_awdb_imm_NVQ80V6VB8XE360HGCMZ?psc=1