That depends on how people remember "decline". Blackberry was thought to be dead in 2009, 2 years after the iPhone, but that year BB sold more devices than ever.
For a long time, "UI design" was done in Adobe Photoshop, so using Adobe Dreamweaver to build out the final product and upload to SFTP was a perfectly serviceable workflow. Back then, websites were needed for a Google presence. Today you can have a business through a Facebook page, or pay to advertise on Google Maps or Yelp. Anything more complicated and you'd need a full SaaS ecommerce platform, not something that only does static HTML pages like DW.
For a long time, "UI design" was done in Adobe Photoshop, so using Adobe Dreamweaver to build out the final product and upload to SFTP was a perfectly serviceable workflow. Back then, websites were needed for a Google presence. Today you can have a business through a Facebook page, or pay to advertise on Google Maps or Yelp. Anything more complicated and you'd need a full SaaS ecommerce platform, not something that only does static HTML pages like DW.