In the linked page Show archive.org snapshot , Manuel Matuzović offers an FAQ regarding web components, and their accessibility in particular.

Rails Long Term Support

Rails LTS provides security patches for old versions of Ruby on Rails (2.3, 3.2, 4.2 and 5.2)

• Prevents you from data breaches and liability risks
• Upgrade at your own pace
• Works with modern Rubies

Read more Show archive.org snapshot

At time of writing this card, the post is still work in progress and will expand over time.

I can also recommend his blog in general.