Help me understand long term cap gain reinvesting

A number of years back, I inherited a brokerage account with two main holdings - TWCUX and TWCGX. Every year, I need to pay capital gains taxes due to activity within this account on these holdings. I never need to pay cap gains on my other investment accounts (largely VTSAX).

What is going on? Is it something a "financial advisor" with the brokerage is doing with selling and reinvesting some of these holdings each year? Is it something with TWCUX and TWCGX that isn't the case with VTSAX?

I don't like it, and I'm tired of paying cap gains on these accounts year after year - 2025 was significantly larger than 2024. Is this benefiting me in some way? I know I can change the reinvesting strategy, but to what, and why, I'm unsure.