Magento – Magento 2 has stopped showing related products on front end product page

So, I simply uncommented that line I've added as an edit and then removed the duplicate entry in my view.phtml to show correctly.

Ok i've sussed it for if anyone needs to do this in future:

<?php
namespace Vendor\Module\Block;

class Crosssellproduct extends \Magento\Catalog\Block\Product\AbstractProduct implements \Magento\Framework\DataObject\IdentityInterface {
protected $_itemCollection;
public function __construct(
    \Magento\Catalog\Block\Product\Context $context,
    array $data = []
) {
    $this->_registry = $context->getRegistry();
    parent::__construct(
        $context,
        $data
    );
}

protected function _prepareData()
{
    $product = $this->_registry->registry('current_product');
    $this->_itemCollection = $product->getCrossSellProductCollection()->addAttributeToSelect(
        $this->_catalogConfig->getProductAttributes()
    )->setPositionOrder()->addStoreFilter();
    $this->_itemCollection->load();
    foreach ($this->_itemCollection as $product) {
        $product->setDoNotUseCategoryId(true);
    }
    return $this;
}

protected function _beforeToHtml()
{
    $this->_prepareData();
    return parent::_beforeToHtml();
}

public function getItems()
{
    return $this->_itemCollection;
}

public function getItemCount() {
    return count($this->getItems());
}
public function getIdentities()
{
    $identities = [];
    foreach ($this->getItems() as $item) {
        $identities = array_merge($identities, $item->getIdentities());
    }
    return $identities;
}
}

And then this block within your module can then be referenced like so:

         <block class="Vendor\Module\Crosssellproduct" name="product.crosssell" template="Magento_Catalog::product/list/items.phtml" after="-">
            <arguments>
                <argument name="type" xsi:type="string">crosssell</argument>
            </arguments>
            <block class="Magento\Catalog\Block\Product\ProductList\Item\Container" name="crosssell.product.addto" as="addto">
                <block class="Magento\Catalog\Block\Product\ProductList\Item\AddTo\Compare"
                       name="crosssell.product.addto.compare" as="compare"
                       template="Magento_Catalog::product/list/addto/compare.phtml"/>
            </block>
        </block> 

I would like to modify it so that it includes standard crosssell plus the crosssell products for the products being viewed however this answers the question.