WordPress seo plugin vs seo theme?

on wordpress if running seo plugin such "all in 1 seo plugin" running seo optimized theme such prosense theme , these themes ugly , plain:

example prosense theme:

, in opinion not end user firendly.

 

Forums Special Interests Web Design and Development

• iPhone
• Mac OS & System Software
• iPad
• Apple Watch
• Notebooks
• iTunes
• Apple ID
• iCloud
• Desktop Computers
• Apple Music
• Professional Applications
• iPod
• iWork
• Apple TV
• iLife
• Wireless