Is Powerlifting techniques and movements bad for someone who trains for recreation, health and longevity?

I love doing Squats and Deadlifts and progressively increasing the weight. Started with Stronglifts5x5 and now doing 5-3-1, I have been training this way since last year and like the improvements in size and strength.

Heavy lifts require the valsalva maneuveur for breathing to protect the spine amongst other things which is what I use for heavy lifts. Just read this causes the left ventricle to increase in size and density to be able to work with more force, over time.

So it made me wonder if this is actually harmful and cause heart problems later on?