Theme full with the developer name

Hi, a month ago I bought a theme for my site but taking a glance of the code I noticed that the name of the developer is everywhere inside the code. I was wondering, Can I change the name of the developer inside the code for the name of my web?. Heres is a piece of the code:

<li><a href="<?php echo esc_url(get_permalink($user_profile_page->ID)) ?>"><i class="fa fa-user"></i> <?php _e('Profile', 'bluthemes') ?></a></li><?php
} ?>
<li><a href="<?php echo esc_url($user_posts_page_url) ?>"><i class="fa fa-cloud-upload"></i> <?php _e('Add post', 'bluthemes') ?></a></li><?php
} ?>
<li class="divider"></li>
<li><a role="menuitem" tabindex="-1" href="<?php echo wp_logout_url(home_url()); ?>"><i class="fa fa-sign-out"></i> <?php _e('Logout', 'bluthemes') ?></a></li>
</ul>
</div><?php
if(!empty($user_posts_page_url)){ ?>
											<a href="<?php echo esc_url( (is_numeric($user_posts_page_url) ? get_permalink($user_posts_page_url) : $user_posts_page_url) ) ?>" class="btn btn-theme navbar-btn"><i class="fa fa-cloud-upload"></i> <?php _e('Add post', 'bluthemes') ?></a><?php

As you can see the word ‘bluthemes’ is everywhere. Would it be safe to change it or at least add a ‘nerdologic’ after it? My web is nerdologic.com Thanks in advance and have a nice day