Create an override function, as to bypass Freemius in some less than smart plugins.

freemius.php

<?php

declare(strict_types=1);

/**
 * Create an override function, as to bypass Freemius in stupid plugins.
 * @wordpress-muplugin
 * Plugin Name: Freemius Stub
 * Description: Global override for Freemius' "loader".
 * Version: 1.1.0
 * Author: Austin Passy
 * Author URI: https://github.com/thefrosty
 * phpcs:disable
 */

if (!\is_blog_installed()) {
    return;
}

// Create the Freemius Stub in case other plugins use their own global we need to override.
global $freemius_stub;
$freemius_stub = new class {

    // Used to generate methods missing in this Stub dynamically. 
    public function __call($name, $arguments)
    {
        return;
    }

    public function add_action(
        $tag,
        $function_to_add,
        $priority = 10,
        $accepted_args = 1
    ) {
        return; // Skip
    }

    public function add_filter(
        $hook_name,
        $callback,
        $priority = 10,
        $accepted_args = 1
    ) {
        return; // Skip
    }

    public function can_use_premium_code()
    {
        return false; // Don't try to use Premium code that's gated by Freemius when we're trying to not use Freemius to any capacity
    }

    public function can_use_premium_code__premium_only()
    {
        return false; // Don't try to use Premium code (especially when it's double-checking only for those that are premium, it seems?) that's gated by Freemius when we're trying to not use Freemius to any capacity
    }

    public function is_activation_mode()
    {
        return false; // It shouldn't ever think it's doing the Freemius activation
    }

    public function is_activation_page()
    {
        return false; // It shouldn't ever think it's on the Freemius activation page
    }

    public function is_free_plan()
    {
        return true; // As an inverse of the premium code checks, let it assume it's on the free plan via Freemius
    }

    public function override_i18n()
    {
        return; // Skip
    }
};

/**
 * Find your plugins' Freemius global variable and assign it below.
 * This example is using Menu Image; $mi_fs found in `wp-content/plugins/menu-image/menu-image.php:147`
 */
global $mi_fs;
$mi_fs = $freemius_stub;