[solarkraft]

That use of emojis gives me a headache, but I (young) do believe that a bit of lightness in otherwise dry topics is extremely important.

What the hell is professionality? Wikipedia says something along the lines of "standards of education and training that prepare members of the profession with the particular knowledge and skills necessary to perform their specific role within that profession".

A (considerate) use of emojis, images and jokes (basically: anything that isn't dry text) can work wonders to make a document more digestible, leading to more effective transfer of information and increased enthusiasm for your brand. I would consider that doing your job quite effectively.

Totally depends on the target audience, of course. I have experienced instances of "over-doing it" before (this is one of them), so I do empathize with the more boring people of the industry a little. But not overly much. "No fun allowed" mentalities can massively hurt morale (remember: this costs money), in my opinion.