I don't think the Renault steering aggressiveness is a good barometer to judge the current Alonso. Alonso certainly is one of the more interesting case studies in adaptability. If you look at his onboards from 2003, he's seemingly changed every year.
Taking a look at his onboards year on year, let's pay attention to the steering:
His steering entries at Renault through 2003-2006 were certainly massively aggressive: (this is from 05)
[youtube]
http://www.youtube.com/watch?v=0zWxHS6PMuk[/youtube]
But with the McLaren on Bridgestones, it was VERY dfferent:
[youtube]
http://www.youtube.com/watch?v=ES3uRsBiDOk[/youtube]
Then we had the 08 Renault on Bridgestones (remember they were on Michelin rubber in 03-06). In comparison to his first Renault stint, his two Renault comeback years were comparatively dainty.
[youtube]
http://www.youtube.com/watch?v=OmcPasRvg88[/youtube]
2009 Renault (different aero and slicks now)
[youtube]
http://www.youtube.com/watch?v=2APYDPjNgYg[/youtube]
2010 Ferrari on the new understeery Bridgestone slicks - there's certainly an added "busy"ness to his steering movements as he takes multiple stabs into corners.
[youtube]
http://www.youtube.com/watch?v=aWYPpxIgXpI[/youtube]
2011 Ferrari on the first Pirelli year. He reverses his 2010 style as his entry sweeps are a lot calmer, but when he unwinds the steering, he takes multiple stabs.
[youtube]
http://www.youtube.com/watch?v=1bXElpqhI0I[/youtube]
2012 Ferrari this year. Things are a lot calmer with the wheel, a lot more "Jenson Button" like in the entry/exit sweeps.
[youtube]
http://www.youtube.com/watch?v=xGyMZZKLRks[/youtube]
My point is - while Alonso was certainly aggressive on the wheel with his Renault, I'm not sure that it may necessarily be the case with his current year.