I disagree. That is the mindset that for someone to succeed, then someone else must fail. Sure in HS, only a set amount can be in the top 5% but in college unless there is a limit on A’s (Princeton removed theirs), then every student has a shot at a 3.8+ regardless of his/her peers’ performance.
Weed out courses have been part of college for a long time and they do a student a service, not disservice. It’s better to find out as a freshman or sophomore that premed isn’t for them whether by study discipline or aptitude. Then the student can adjust majors before paying for a four year degree that may not open many doors outside medicine (chemistry or biology).
Research opportunities are competitive but such is life.