In the earlier years of the internet, many web designers preferred overusing Flash animations, ignoring users with slow internet connections or without Flash player. These early implementations often neglected basic usability principles, too, therefore the whole technology was criticized for being unusable and inaccessible.

Flash technology has improved a lot since: it is now SEO friendly, has rich accessibility features and even supports the use of the browser’s back button. Most users have no problems with Flash itself, suffice to mention the popularity of online video sharing sites.

→ https://uxmyths.com/post/717781129/myth-18-flash-is-evil

Busted!

However since smart phones and tablets are a thing, Flash is no longer an option for any user-friendly website or app.