What is your opinion of American Funds AMCPX mutual fund by Capital Group?

I have a Roth with American Funds with 100% in AMCPX that I would consistently contribute.

A couple years ago I stopped after I started questioning the value of $300 load fee coming off the top from the $6000 I would contribute every year.

I also noticed the high expense ratio when compared to popular index funds.

The returns of this fund have also lagged the market and the funds own benchmarks.

I opened a secondary Roth at Fidelity instead and invested in index funds.

Today I posted on the r/fidelity investments sub about the process of consolidating the accounts to my Fidelity Roth and liquidating my stake in AMCPX.

Another poster mentioned that AMCPX is a very good fund which has left me confused. I am wondering if I am missing something.

Does anyone here own AMCPX or have an opinion of the fund either way?

TIA