Viewing the comments here... I am very satisfied with Gutenberg. I think it's a great alternative to page builders, with everything being native to WP. I've implemented Gutenberg for medium and large sites, and WooCommerce shopping, and my clients don't need the extra bloat or training for Elementor or other platforms; those page builders are good, and they can occasionally offer a tweak you can't get elsewhere, but I find 95% of everything wanted in a site is built into the (Automattic) theme, available with a block, customizable with CSS, or ready via plugin or coding.

The roadmap looks good, I can even accept 3 to 4 years for Gutenberg to fully challenge page builders. If clients need a bit of training to get used to Gutenberg, it's worth it to go forward with that mindset so they can get used to the idea of more advanced builders if necessary. Have you tried cutting and pasting a word doc or a web page into a Gutenberg-enabled page? It's brilliant! Everything gets pasted in automatically to the appropriate block, making an instant well-designed WP page. My clients and I love it.