Do you think that now I can use Instagram and Snapchat to market myself as a blogger?

As the trend for instagram and snapchatting is increasing, people nowadays indulge more of their time to find new information which is short and eye catching.

Yes. With our very limited attention span, Instagram and Snapchat are the best options for your Blog as you will be providing more visual and audio-based content to your audience. 

Yes, people love to read and I am an avid reader myself. But if you ask me, I'd rather get the information about something from a visually attractive video than a 2 page long well-written blog. 

Simply serach for "best free blogging platforms" you will not find instgram and snapchat between them

I fully agree with the experts submissions here.

Thanx for the invitation

Yes, you can, Link your blog with your instegram and use catchy small contents.